diff --git a/compiler/frontend.java/src/org/jetbrains/kotlin/resolve/jvm/checkers/InconsistentOperatorFromJavaCallChecker.kt b/compiler/frontend.java/src/org/jetbrains/kotlin/resolve/jvm/checkers/InconsistentOperatorFromJavaCallChecker.kt
new file mode 100644
index 00000000000..3bfffae2039
--- /dev/null
+++ b/compiler/frontend.java/src/org/jetbrains/kotlin/resolve/jvm/checkers/InconsistentOperatorFromJavaCallChecker.kt
@@ -0,0 +1,50 @@
+/*
+ * Copyright 2010-2018 JetBrains s.r.o. Use of this source code is governed by the Apache 2.0 license
+ * that can be found in the license/LICENSE.txt file.
+ */
+
+package org.jetbrains.kotlin.resolve.jvm.checkers
+
+import com.intellij.psi.PsiElement
+import org.jetbrains.kotlin.config.LanguageFeature
+import org.jetbrains.kotlin.descriptors.ClassDescriptor
+import org.jetbrains.kotlin.name.FqName
+import org.jetbrains.kotlin.psi.KtBinaryExpression
+import org.jetbrains.kotlin.resolve.calls.checkers.CallChecker
+import org.jetbrains.kotlin.resolve.calls.checkers.CallCheckerContext
+import org.jetbrains.kotlin.resolve.calls.model.ResolvedCall
+import org.jetbrains.kotlin.resolve.descriptorUtil.fqNameOrNull
+import org.jetbrains.kotlin.resolve.descriptorUtil.overriddenTreeUniqueAsSequence
+import org.jetbrains.kotlin.resolve.jvm.diagnostics.ErrorsJvm
+import org.jetbrains.kotlin.types.typeUtil.isAnyOrNullableAny
+import org.jetbrains.kotlin.util.OperatorNameConventions
+
+/**
+ * This checker detects if call by operator convention to a Java method violates some expected contract:
+ * - "key in map" commonly resolves to an stdlib extension that calls Map.containsKey(),
+ *   but there's a member in ConcurrentHashMap with acceptable signature that delegates to `containsValue` instead
+ */
+object InconsistentOperatorFromJavaCallChecker : CallChecker {
+    private val CONCURRENT_HASH_MAP_FQ_NAME = FqName("java.util.concurrent.ConcurrentHashMap")
+
+    override fun check(resolvedCall: ResolvedCall<*>, reportOn: PsiElement, context: CallCheckerContext) {
+        val candidateDescriptor = resolvedCall.candidateDescriptor
+        if (candidateDescriptor.name != OperatorNameConventions.CONTAINS) return
+        if (candidateDescriptor.valueParameters.singleOrNull()?.type?.isAnyOrNullableAny() != true) return
+        if (resolvedCall.call.callElement !is KtBinaryExpression || !resolvedCall.status.possibleTransformToSuccess()) return
+
+        for (callableDescriptor in candidateDescriptor.overriddenTreeUniqueAsSequence(useOriginal = false)) {
+            val containingClass = callableDescriptor.containingDeclaration as? ClassDescriptor ?: continue
+            if (containingClass.fqNameOrNull() != CONCURRENT_HASH_MAP_FQ_NAME) continue
+
+            val diagnosticFactory =
+                if (context.languageVersionSettings.supportsFeature(LanguageFeature.ProhibitConcurrentHashMapContains))
+                    ErrorsJvm.CONCURRENT_HASH_MAP_CONTAINS_OPERATOR_ERROR
+                else
+                    ErrorsJvm.CONCURRENT_HASH_MAP_CONTAINS_OPERATOR
+
+            context.trace.report(diagnosticFactory.on(reportOn))
+            break
+        }
+    }
+}
diff --git a/compiler/frontend.java/src/org/jetbrains/kotlin/resolve/jvm/diagnostics/DefaultErrorMessagesJvm.java b/compiler/frontend.java/src/org/jetbrains/kotlin/resolve/jvm/diagnostics/DefaultErrorMessagesJvm.java
index 6304c5d204e..4d05b24ff41 100644
--- a/compiler/frontend.java/src/org/jetbrains/kotlin/resolve/jvm/diagnostics/DefaultErrorMessagesJvm.java
+++ b/compiler/frontend.java/src/org/jetbrains/kotlin/resolve/jvm/diagnostics/DefaultErrorMessagesJvm.java
@@ -138,6 +138,13 @@ public class DefaultErrorMessagesJvm implements DefaultErrorMessages.Extension {
         MAP.put(EXPLICIT_METADATA_IS_DISALLOWED, "Explicit @Metadata is disallowed");
         MAP.put(SUSPENSION_POINT_INSIDE_MONITOR, "A suspension point at {0} is inside a critical section", STRING);
         MAP.put(SUSPENSION_POINT_INSIDE_SYNCHRONIZED, "The ''{0}'' suspension point is inside a synchronized block", NAME);
+
+        String MESSAGE_FOR_CONCURRENT_HASH_MAP_CONTAINS =
+                "Method 'contains' from ConcurrentHashMap may have unexpected semantics: it calls 'containsValue' instead of 'containsKey'. " +
+                "Use explicit form of the call to 'containsKey'/'containsValue'/'contains' or cast the value to kotlin.collections.Map instead. " +
+                "See https://youtrack.jetbrains.com/issue/KT-18053 for more details";
+        MAP.put(CONCURRENT_HASH_MAP_CONTAINS_OPERATOR, MESSAGE_FOR_CONCURRENT_HASH_MAP_CONTAINS);
+        MAP.put(CONCURRENT_HASH_MAP_CONTAINS_OPERATOR_ERROR, MESSAGE_FOR_CONCURRENT_HASH_MAP_CONTAINS);
     }
 
     @NotNull
diff --git a/compiler/frontend.java/src/org/jetbrains/kotlin/resolve/jvm/diagnostics/ErrorsJvm.java b/compiler/frontend.java/src/org/jetbrains/kotlin/resolve/jvm/diagnostics/ErrorsJvm.java
index 37222fd58bc..8b50eb45909 100644
--- a/compiler/frontend.java/src/org/jetbrains/kotlin/resolve/jvm/diagnostics/ErrorsJvm.java
+++ b/compiler/frontend.java/src/org/jetbrains/kotlin/resolve/jvm/diagnostics/ErrorsJvm.java
@@ -125,6 +125,9 @@ public interface ErrorsJvm {
     DiagnosticFactory1<PsiElement, String> SUSPENSION_POINT_INSIDE_MONITOR = DiagnosticFactory1.create(ERROR);
     DiagnosticFactory1<PsiElement, CallableDescriptor> SUSPENSION_POINT_INSIDE_SYNCHRONIZED = DiagnosticFactory1.create(ERROR);
 
+    DiagnosticFactory0<PsiElement> CONCURRENT_HASH_MAP_CONTAINS_OPERATOR = DiagnosticFactory0.create(WARNING);
+    DiagnosticFactory0<PsiElement> CONCURRENT_HASH_MAP_CONTAINS_OPERATOR_ERROR = DiagnosticFactory0.create(ERROR);
+
     @SuppressWarnings("UnusedDeclaration")
     Object _initializer = new Object() {
         {
diff --git a/compiler/frontend.java/src/org/jetbrains/kotlin/resolve/jvm/platform/JvmPlatformConfigurator.kt b/compiler/frontend.java/src/org/jetbrains/kotlin/resolve/jvm/platform/JvmPlatformConfigurator.kt
index 898c7fbaacc..b96e038c291 100644
--- a/compiler/frontend.java/src/org/jetbrains/kotlin/resolve/jvm/platform/JvmPlatformConfigurator.kt
+++ b/compiler/frontend.java/src/org/jetbrains/kotlin/resolve/jvm/platform/JvmPlatformConfigurator.kt
@@ -50,7 +50,8 @@ object JvmPlatformConfigurator : PlatformConfiguratorBase(
         ProtectedSyntheticExtensionCallChecker,
         ReifiedTypeParameterSubstitutionChecker(),
         RuntimeAssertionsOnExtensionReceiverCallChecker,
-        ApiVersionIsAtLeastArgumentsChecker
+        ApiVersionIsAtLeastArgumentsChecker,
+        InconsistentOperatorFromJavaCallChecker
     ),
 
     additionalTypeCheckers = listOf(
diff --git a/compiler/testData/diagnostics/testsWithStdLib/java/concurrentHashMapContains.kt b/compiler/testData/diagnostics/testsWithStdLib/java/concurrentHashMapContains.kt
new file mode 100644
index 00000000000..69214b467ba
--- /dev/null
+++ b/compiler/testData/diagnostics/testsWithStdLib/java/concurrentHashMapContains.kt
@@ -0,0 +1,78 @@
+// FULL_JDK
+
+class A : java.util.concurrent.ConcurrentHashMap<String, Int>() {
+    operator fun contains(<!UNUSED_PARAMETER!>x<!>: Char): Boolean = true
+}
+class B : java.util.concurrent.ConcurrentHashMap<String, Int>() {
+    override fun contains(value: Any?): Boolean {
+        return super.contains(value)
+    }
+}
+
+class C : java.util.concurrent.ConcurrentHashMap<String, Int>() {
+    operator override fun contains(value: Any?): Boolean {
+        return super.contains(value)
+    }
+}
+
+fun main() {
+    val hm = java.util.concurrent.ConcurrentHashMap<String, Int>()
+    "" <!CONCURRENT_HASH_MAP_CONTAINS_OPERATOR!>in<!> hm
+    "" <!CONCURRENT_HASH_MAP_CONTAINS_OPERATOR!>!in<!> hm
+    1 <!CONCURRENT_HASH_MAP_CONTAINS_OPERATOR!>!in<!> hm
+    2 <!CONCURRENT_HASH_MAP_CONTAINS_OPERATOR!>in<!> hm
+
+    hm.contains("")
+    hm.contains(1)
+
+    "" in (hm as Map<String, Int>)
+    "" !in (hm as Map<String, Int>)
+    1 <!TYPE_INFERENCE_CONFLICTING_SUBSTITUTIONS!>in<!> (hm as Map<String, Int>)
+    1 <!TYPE_INFERENCE_CONFLICTING_SUBSTITUTIONS!>!in<!> (hm as Map<String, Int>)
+
+    val a = A()
+    "" <!CONCURRENT_HASH_MAP_CONTAINS_OPERATOR!>in<!> a
+    "" <!CONCURRENT_HASH_MAP_CONTAINS_OPERATOR!>!in<!> a
+    1 <!CONCURRENT_HASH_MAP_CONTAINS_OPERATOR!>!in<!> a
+    2 <!CONCURRENT_HASH_MAP_CONTAINS_OPERATOR!>in<!> a
+
+    ' ' in a
+    ' ' !in a
+    a.contains("")
+    a.contains(1)
+
+    "" in (a as Map<String, Int>)
+    "" !in (a as Map<String, Int>)
+    1 <!TYPE_INFERENCE_CONFLICTING_SUBSTITUTIONS!>in<!> (a as Map<String, Int>)
+    1 <!TYPE_INFERENCE_CONFLICTING_SUBSTITUTIONS!>!in<!> (a as Map<String, Int>)
+
+    val b = B()
+    "" <!CONCURRENT_HASH_MAP_CONTAINS_OPERATOR!>in<!> b
+    "" <!CONCURRENT_HASH_MAP_CONTAINS_OPERATOR!>!in<!> b
+    1 <!CONCURRENT_HASH_MAP_CONTAINS_OPERATOR!>!in<!> b
+    2 <!CONCURRENT_HASH_MAP_CONTAINS_OPERATOR!>in<!> b
+
+    b.contains("")
+    b.contains(1)
+
+    "" in (b as Map<String, Int>)
+    "" !in (b as Map<String, Int>)
+    1 <!TYPE_INFERENCE_CONFLICTING_SUBSTITUTIONS!>in<!> (b as Map<String, Int>)
+    1 <!TYPE_INFERENCE_CONFLICTING_SUBSTITUTIONS!>!in<!> (b as Map<String, Int>)
+
+    // Actually, we could've allow calls here because the owner explicitly declared as operator, but semantics is still weird
+    val c = C()
+    "" <!CONCURRENT_HASH_MAP_CONTAINS_OPERATOR!>in<!> c
+    "" <!CONCURRENT_HASH_MAP_CONTAINS_OPERATOR!>!in<!> c
+    1 <!CONCURRENT_HASH_MAP_CONTAINS_OPERATOR!>!in<!> c
+    2 <!CONCURRENT_HASH_MAP_CONTAINS_OPERATOR!>in<!> c
+
+    c.contains("")
+    c.contains(1)
+
+    "" in (c as Map<String, Int>)
+    "" !in (c as Map<String, Int>)
+    1 <!TYPE_INFERENCE_CONFLICTING_SUBSTITUTIONS!>in<!> (c as Map<String, Int>)
+    1 <!TYPE_INFERENCE_CONFLICTING_SUBSTITUTIONS!>!in<!> (c as Map<String, Int>)
+}
+
diff --git a/compiler/testData/diagnostics/testsWithStdLib/java/concurrentHashMapContains.txt b/compiler/testData/diagnostics/testsWithStdLib/java/concurrentHashMapContains.txt
new file mode 100644
index 00000000000..0bb9bc22bb0
--- /dev/null
+++ b/compiler/testData/diagnostics/testsWithStdLib/java/concurrentHashMapContains.txt
@@ -0,0 +1,274 @@
+package
+
+public fun main(): kotlin.Unit
+
+public final class A : java.util.concurrent.ConcurrentHashMap<kotlin.String, kotlin.Int> {
+    public constructor A()
+    invisible_fake final override /*1*/ /*fake_override*/ var baseCount: kotlin.Long
+    invisible_fake final override /*1*/ /*fake_override*/ var cellsBusy: kotlin.Int
+    invisible_fake final override /*1*/ /*fake_override*/ var counterCells: kotlin.Array<(out) java.util.concurrent.ConcurrentHashMap.CounterCell!>!
+    public open override /*1*/ /*fake_override*/ val entries: kotlin.collections.MutableSet<kotlin.collections.MutableMap.MutableEntry<kotlin.String, kotlin.Int>>
+    invisible_fake final override /*1*/ /*fake_override*/ var entrySet: java.util.concurrent.ConcurrentHashMap.EntrySetView<kotlin.String!, kotlin.Int!>!
+    invisible_fake final override /*1*/ /*fake_override*/ var keySet: java.util.concurrent.ConcurrentHashMap.KeySetView<kotlin.String!, kotlin.Int!>!
+    public open override /*1*/ /*fake_override*/ val keys: java.util.concurrent.ConcurrentHashMap.KeySetView<kotlin.String!, kotlin.Int!>
+    invisible_fake final override /*1*/ /*fake_override*/ var nextTable: kotlin.Array<(out) java.util.concurrent.ConcurrentHashMap.Node<kotlin.String!, kotlin.Int!>!>!
+    public open override /*1*/ /*fake_override*/ val size: kotlin.Int
+    invisible_fake final override /*1*/ /*fake_override*/ var sizeCtl: kotlin.Int
+    invisible_fake final override /*1*/ /*fake_override*/ var table: kotlin.Array<(out) java.util.concurrent.ConcurrentHashMap.Node<kotlin.String!, kotlin.Int!>!>!
+    invisible_fake final override /*1*/ /*fake_override*/ var transferIndex: kotlin.Int
+    invisible_fake final override /*1*/ /*fake_override*/ var values: java.util.concurrent.ConcurrentHashMap.ValuesView<kotlin.String!, kotlin.Int!>!
+    public open override /*1*/ /*fake_override*/ val values: kotlin.collections.MutableCollection<kotlin.Int>
+    invisible_fake final override /*1*/ /*fake_override*/ fun addCount(/*0*/ p0: kotlin.Long, /*1*/ p1: kotlin.Int): kotlin.Unit
+    invisible_fake final override /*1*/ /*fake_override*/ fun batchFor(/*0*/ p0: kotlin.Long): kotlin.Int
+    public open override /*1*/ /*fake_override*/ fun clear(): kotlin.Unit
+    protected/*protected and package*/ open override /*1*/ /*fake_override*/ fun clone(): kotlin.Any!
+    public open override /*1*/ /*fake_override*/ fun compute(/*0*/ p0: kotlin.String, /*1*/ p1: java.util.function.BiFunction<in kotlin.String, in kotlin.Int?, out kotlin.Int?>): kotlin.Int?
+    public open override /*1*/ /*fake_override*/ fun computeIfAbsent(/*0*/ p0: kotlin.String, /*1*/ p1: java.util.function.Function<in kotlin.String, out kotlin.Int>): kotlin.Int
+    public open override /*1*/ /*fake_override*/ fun computeIfPresent(/*0*/ p0: kotlin.String, /*1*/ p1: java.util.function.BiFunction<in kotlin.String, in kotlin.Int, out kotlin.Int?>): kotlin.Int?
+    public open override /*1*/ /*fake_override*/ fun contains(/*0*/ p0: kotlin.Any!): kotlin.Boolean
+    public final operator fun contains(/*0*/ x: kotlin.Char): kotlin.Boolean
+    public open override /*1*/ /*fake_override*/ fun containsKey(/*0*/ key: kotlin.String): kotlin.Boolean
+    public open override /*1*/ /*fake_override*/ fun containsValue(/*0*/ value: kotlin.Int): kotlin.Boolean
+    public open override /*1*/ /*fake_override*/ fun elements(): java.util.Enumeration<kotlin.Int!>!
+    public open override /*1*/ /*fake_override*/ fun equals(/*0*/ other: kotlin.Any?): kotlin.Boolean
+    public open override /*1*/ /*fake_override*/ fun forEach(/*0*/ p0: java.util.function.BiConsumer<in kotlin.String, in kotlin.Int>): kotlin.Unit
+    public open override /*1*/ /*fake_override*/ fun forEach(/*0*/ p0: kotlin.Long, /*1*/ p1: java.util.function.BiConsumer<in kotlin.String!, in kotlin.Int!>!): kotlin.Unit
+    public open override /*1*/ /*fake_override*/ fun </*0*/ U : kotlin.Any!> forEach(/*0*/ p0: kotlin.Long, /*1*/ p1: java.util.function.BiFunction<in kotlin.String!, in kotlin.Int!, out U!>!, /*2*/ p2: java.util.function.Consumer<in U!>!): kotlin.Unit
+    public open override /*1*/ /*fake_override*/ fun forEachEntry(/*0*/ p0: kotlin.Long, /*1*/ p1: java.util.function.Consumer<in kotlin.collections.(Mutable)Map.(Mutable)Entry<kotlin.String!, kotlin.Int!>!>!): kotlin.Unit
+    public open override /*1*/ /*fake_override*/ fun </*0*/ U : kotlin.Any!> forEachEntry(/*0*/ p0: kotlin.Long, /*1*/ p1: java.util.function.Function<kotlin.collections.(Mutable)Map.(Mutable)Entry<kotlin.String!, kotlin.Int!>!, out U!>!, /*2*/ p2: java.util.function.Consumer<in U!>!): kotlin.Unit
+    public open override /*1*/ /*fake_override*/ fun forEachKey(/*0*/ p0: kotlin.Long, /*1*/ p1: java.util.function.Consumer<in kotlin.String!>!): kotlin.Unit
+    public open override /*1*/ /*fake_override*/ fun </*0*/ U : kotlin.Any!> forEachKey(/*0*/ p0: kotlin.Long, /*1*/ p1: java.util.function.Function<in kotlin.String!, out U!>!, /*2*/ p2: java.util.function.Consumer<in U!>!): kotlin.Unit
+    public open override /*1*/ /*fake_override*/ fun forEachValue(/*0*/ p0: kotlin.Long, /*1*/ p1: java.util.function.Consumer<in kotlin.Int!>!): kotlin.Unit
+    public open override /*1*/ /*fake_override*/ fun </*0*/ U : kotlin.Any!> forEachValue(/*0*/ p0: kotlin.Long, /*1*/ p1: java.util.function.Function<in kotlin.Int!, out U!>!, /*2*/ p2: java.util.function.Consumer<in U!>!): kotlin.Unit
+    invisible_fake final override /*1*/ /*fake_override*/ fun fullAddCount(/*0*/ p0: kotlin.Long, /*1*/ p1: kotlin.Boolean): kotlin.Unit
+    public open override /*1*/ /*fake_override*/ fun get(/*0*/ key: kotlin.String): kotlin.Int?
+    public open override /*1*/ /*fake_override*/ fun getOrDefault(/*0*/ key: kotlin.String, /*1*/ defaultValue: kotlin.Int): kotlin.Int
+    public open override /*1*/ /*fake_override*/ fun hashCode(): kotlin.Int
+    invisible_fake final override /*1*/ /*fake_override*/ fun helpTransfer(/*0*/ p0: kotlin.Array<(out) java.util.concurrent.ConcurrentHashMap.Node<kotlin.String!, kotlin.Int!>!>!, /*1*/ p1: java.util.concurrent.ConcurrentHashMap.Node<kotlin.String!, kotlin.Int!>!): kotlin.Array<(out) java.util.concurrent.ConcurrentHashMap.Node<kotlin.String!, kotlin.Int!>!>!
+    invisible_fake final override /*1*/ /*fake_override*/ fun initTable(): kotlin.Array<(out) java.util.concurrent.ConcurrentHashMap.Node<kotlin.String!, kotlin.Int!>!>!
+    public open override /*1*/ /*fake_override*/ fun isEmpty(): kotlin.Boolean
+    public open override /*1*/ /*fake_override*/ fun keySet(/*0*/ p0: kotlin.Int!): java.util.concurrent.ConcurrentHashMap.KeySetView<kotlin.String!, kotlin.Int!>!
+    public open override /*1*/ /*fake_override*/ fun keys(): java.util.Enumeration<kotlin.String!>!
+    public open override /*1*/ /*fake_override*/ fun mappingCount(): kotlin.Long
+    public open override /*1*/ /*fake_override*/ fun merge(/*0*/ p0: kotlin.String, /*1*/ p1: kotlin.Int, /*2*/ p2: java.util.function.BiFunction<in kotlin.Int, in kotlin.Int, out kotlin.Int?>): kotlin.Int?
+    public open override /*1*/ /*fake_override*/ fun put(/*0*/ key: kotlin.String, /*1*/ value: kotlin.Int): kotlin.Int?
+    public open override /*1*/ /*fake_override*/ fun putAll(/*0*/ from: kotlin.collections.Map<out kotlin.String, kotlin.Int>): kotlin.Unit
+    public open override /*1*/ /*fake_override*/ fun putIfAbsent(/*0*/ p0: kotlin.String, /*1*/ p1: kotlin.Int): kotlin.Int?
+    invisible_fake final override /*1*/ /*fake_override*/ fun putVal(/*0*/ p0: kotlin.String!, /*1*/ p1: kotlin.Int!, /*2*/ p2: kotlin.Boolean): kotlin.Int!
+    invisible_fake open override /*1*/ /*fake_override*/ fun readObject(/*0*/ p0: java.io.ObjectInputStream!): kotlin.Unit
+    public open override /*1*/ /*fake_override*/ fun </*0*/ U : kotlin.Any!> reduce(/*0*/ p0: kotlin.Long, /*1*/ p1: java.util.function.BiFunction<in kotlin.String!, in kotlin.Int!, out U!>!, /*2*/ p2: java.util.function.BiFunction<in U!, in U!, out U!>!): U!
+    public open override /*1*/ /*fake_override*/ fun reduceEntries(/*0*/ p0: kotlin.Long, /*1*/ p1: java.util.function.BiFunction<kotlin.collections.(Mutable)Map.(Mutable)Entry<kotlin.String!, kotlin.Int!>!, kotlin.collections.(Mutable)Map.(Mutable)Entry<kotlin.String!, kotlin.Int!>!, out kotlin.collections.(Mutable)Map.(Mutable)Entry<kotlin.String!, kotlin.Int!>!>!): kotlin.collections.(Mutable)Map.(Mutable)Entry<kotlin.String!, kotlin.Int!>!
+    public open override /*1*/ /*fake_override*/ fun </*0*/ U : kotlin.Any!> reduceEntries(/*0*/ p0: kotlin.Long, /*1*/ p1: java.util.function.Function<kotlin.collections.(Mutable)Map.(Mutable)Entry<kotlin.String!, kotlin.Int!>!, out U!>!, /*2*/ p2: java.util.function.BiFunction<in U!, in U!, out U!>!): U!
+    public open override /*1*/ /*fake_override*/ fun reduceEntriesToDouble(/*0*/ p0: kotlin.Long, /*1*/ p1: java.util.function.ToDoubleFunction<kotlin.collections.(Mutable)Map.(Mutable)Entry<kotlin.String!, kotlin.Int!>!>!, /*2*/ p2: kotlin.Double, /*3*/ p3: java.util.function.DoubleBinaryOperator!): kotlin.Double
+    public open override /*1*/ /*fake_override*/ fun reduceEntriesToInt(/*0*/ p0: kotlin.Long, /*1*/ p1: java.util.function.ToIntFunction<kotlin.collections.(Mutable)Map.(Mutable)Entry<kotlin.String!, kotlin.Int!>!>!, /*2*/ p2: kotlin.Int, /*3*/ p3: java.util.function.IntBinaryOperator!): kotlin.Int
+    public open override /*1*/ /*fake_override*/ fun reduceEntriesToLong(/*0*/ p0: kotlin.Long, /*1*/ p1: java.util.function.ToLongFunction<kotlin.collections.(Mutable)Map.(Mutable)Entry<kotlin.String!, kotlin.Int!>!>!, /*2*/ p2: kotlin.Long, /*3*/ p3: java.util.function.LongBinaryOperator!): kotlin.Long
+    public open override /*1*/ /*fake_override*/ fun reduceKeys(/*0*/ p0: kotlin.Long, /*1*/ p1: java.util.function.BiFunction<in kotlin.String!, in kotlin.String!, out kotlin.String!>!): kotlin.String!
+    public open override /*1*/ /*fake_override*/ fun </*0*/ U : kotlin.Any!> reduceKeys(/*0*/ p0: kotlin.Long, /*1*/ p1: java.util.function.Function<in kotlin.String!, out U!>!, /*2*/ p2: java.util.function.BiFunction<in U!, in U!, out U!>!): U!
+    public open override /*1*/ /*fake_override*/ fun reduceKeysToDouble(/*0*/ p0: kotlin.Long, /*1*/ p1: java.util.function.ToDoubleFunction<in kotlin.String!>!, /*2*/ p2: kotlin.Double, /*3*/ p3: java.util.function.DoubleBinaryOperator!): kotlin.Double
+    public open override /*1*/ /*fake_override*/ fun reduceKeysToInt(/*0*/ p0: kotlin.Long, /*1*/ p1: java.util.function.ToIntFunction<in kotlin.String!>!, /*2*/ p2: kotlin.Int, /*3*/ p3: java.util.function.IntBinaryOperator!): kotlin.Int
+    public open override /*1*/ /*fake_override*/ fun reduceKeysToLong(/*0*/ p0: kotlin.Long, /*1*/ p1: java.util.function.ToLongFunction<in kotlin.String!>!, /*2*/ p2: kotlin.Long, /*3*/ p3: java.util.function.LongBinaryOperator!): kotlin.Long
+    public open override /*1*/ /*fake_override*/ fun reduceToDouble(/*0*/ p0: kotlin.Long, /*1*/ p1: java.util.function.ToDoubleBiFunction<in kotlin.String!, in kotlin.Int!>!, /*2*/ p2: kotlin.Double, /*3*/ p3: java.util.function.DoubleBinaryOperator!): kotlin.Double
+    public open override /*1*/ /*fake_override*/ fun reduceToInt(/*0*/ p0: kotlin.Long, /*1*/ p1: java.util.function.ToIntBiFunction<in kotlin.String!, in kotlin.Int!>!, /*2*/ p2: kotlin.Int, /*3*/ p3: java.util.function.IntBinaryOperator!): kotlin.Int
+    public open override /*1*/ /*fake_override*/ fun reduceToLong(/*0*/ p0: kotlin.Long, /*1*/ p1: java.util.function.ToLongBiFunction<in kotlin.String!, in kotlin.Int!>!, /*2*/ p2: kotlin.Long, /*3*/ p3: java.util.function.LongBinaryOperator!): kotlin.Long
+    public open override /*1*/ /*fake_override*/ fun reduceValues(/*0*/ p0: kotlin.Long, /*1*/ p1: java.util.function.BiFunction<in kotlin.Int!, in kotlin.Int!, out kotlin.Int!>!): kotlin.Int!
+    public open override /*1*/ /*fake_override*/ fun </*0*/ U : kotlin.Any!> reduceValues(/*0*/ p0: kotlin.Long, /*1*/ p1: java.util.function.Function<in kotlin.Int!, out U!>!, /*2*/ p2: java.util.function.BiFunction<in U!, in U!, out U!>!): U!
+    public open override /*1*/ /*fake_override*/ fun reduceValuesToDouble(/*0*/ p0: kotlin.Long, /*1*/ p1: java.util.function.ToDoubleFunction<in kotlin.Int!>!, /*2*/ p2: kotlin.Double, /*3*/ p3: java.util.function.DoubleBinaryOperator!): kotlin.Double
+    public open override /*1*/ /*fake_override*/ fun reduceValuesToInt(/*0*/ p0: kotlin.Long, /*1*/ p1: java.util.function.ToIntFunction<in kotlin.Int!>!, /*2*/ p2: kotlin.Int, /*3*/ p3: java.util.function.IntBinaryOperator!): kotlin.Int
+    public open override /*1*/ /*fake_override*/ fun reduceValuesToLong(/*0*/ p0: kotlin.Long, /*1*/ p1: java.util.function.ToLongFunction<in kotlin.Int!>!, /*2*/ p2: kotlin.Long, /*3*/ p3: java.util.function.LongBinaryOperator!): kotlin.Long
+    public open override /*1*/ /*fake_override*/ fun remove(/*0*/ key: kotlin.String): kotlin.Int?
+    public open override /*1*/ /*fake_override*/ fun remove(/*0*/ key: kotlin.String, /*1*/ value: kotlin.Int): kotlin.Boolean
+    public open override /*1*/ /*fake_override*/ fun replace(/*0*/ p0: kotlin.String, /*1*/ p1: kotlin.Int): kotlin.Int?
+    public open override /*1*/ /*fake_override*/ fun replace(/*0*/ p0: kotlin.String, /*1*/ p1: kotlin.Int, /*2*/ p2: kotlin.Int): kotlin.Boolean
+    public open override /*1*/ /*fake_override*/ fun replaceAll(/*0*/ p0: java.util.function.BiFunction<in kotlin.String, in kotlin.Int, out kotlin.Int>): kotlin.Unit
+    invisible_fake final override /*1*/ /*fake_override*/ fun replaceNode(/*0*/ p0: kotlin.Any!, /*1*/ p1: kotlin.Int!, /*2*/ p2: kotlin.Any!): kotlin.Int!
+    public open override /*1*/ /*fake_override*/ fun </*0*/ U : kotlin.Any!> search(/*0*/ p0: kotlin.Long, /*1*/ p1: java.util.function.BiFunction<in kotlin.String!, in kotlin.Int!, out U!>!): U!
+    public open override /*1*/ /*fake_override*/ fun </*0*/ U : kotlin.Any!> searchEntries(/*0*/ p0: kotlin.Long, /*1*/ p1: java.util.function.Function<kotlin.collections.(Mutable)Map.(Mutable)Entry<kotlin.String!, kotlin.Int!>!, out U!>!): U!
+    public open override /*1*/ /*fake_override*/ fun </*0*/ U : kotlin.Any!> searchKeys(/*0*/ p0: kotlin.Long, /*1*/ p1: java.util.function.Function<in kotlin.String!, out U!>!): U!
+    public open override /*1*/ /*fake_override*/ fun </*0*/ U : kotlin.Any!> searchValues(/*0*/ p0: kotlin.Long, /*1*/ p1: java.util.function.Function<in kotlin.Int!, out U!>!): U!
+    invisible_fake final override /*1*/ /*fake_override*/ fun sumCount(): kotlin.Long
+    public open override /*1*/ /*fake_override*/ fun toString(): kotlin.String
+    invisible_fake final override /*1*/ /*fake_override*/ fun transfer(/*0*/ p0: kotlin.Array<(out) java.util.concurrent.ConcurrentHashMap.Node<kotlin.String!, kotlin.Int!>!>!, /*1*/ p1: kotlin.Array<(out) java.util.concurrent.ConcurrentHashMap.Node<kotlin.String!, kotlin.Int!>!>!): kotlin.Unit
+    invisible_fake final override /*1*/ /*fake_override*/ fun treeifyBin(/*0*/ p0: kotlin.Array<(out) java.util.concurrent.ConcurrentHashMap.Node<kotlin.String!, kotlin.Int!>!>!, /*1*/ p1: kotlin.Int): kotlin.Unit
+    invisible_fake final override /*1*/ /*fake_override*/ fun tryPresize(/*0*/ p0: kotlin.Int): kotlin.Unit
+    invisible_fake open override /*1*/ /*fake_override*/ fun writeObject(/*0*/ p0: java.io.ObjectOutputStream!): kotlin.Unit
+}
+
+public final class B : java.util.concurrent.ConcurrentHashMap<kotlin.String, kotlin.Int> {
+    public constructor B()
+    invisible_fake final override /*1*/ /*fake_override*/ var baseCount: kotlin.Long
+    invisible_fake final override /*1*/ /*fake_override*/ var cellsBusy: kotlin.Int
+    invisible_fake final override /*1*/ /*fake_override*/ var counterCells: kotlin.Array<(out) java.util.concurrent.ConcurrentHashMap.CounterCell!>!
+    public open override /*1*/ /*fake_override*/ val entries: kotlin.collections.MutableSet<kotlin.collections.MutableMap.MutableEntry<kotlin.String, kotlin.Int>>
+    invisible_fake final override /*1*/ /*fake_override*/ var entrySet: java.util.concurrent.ConcurrentHashMap.EntrySetView<kotlin.String!, kotlin.Int!>!
+    invisible_fake final override /*1*/ /*fake_override*/ var keySet: java.util.concurrent.ConcurrentHashMap.KeySetView<kotlin.String!, kotlin.Int!>!
+    public open override /*1*/ /*fake_override*/ val keys: java.util.concurrent.ConcurrentHashMap.KeySetView<kotlin.String!, kotlin.Int!>
+    invisible_fake final override /*1*/ /*fake_override*/ var nextTable: kotlin.Array<(out) java.util.concurrent.ConcurrentHashMap.Node<kotlin.String!, kotlin.Int!>!>!
+    public open override /*1*/ /*fake_override*/ val size: kotlin.Int
+    invisible_fake final override /*1*/ /*fake_override*/ var sizeCtl: kotlin.Int
+    invisible_fake final override /*1*/ /*fake_override*/ var table: kotlin.Array<(out) java.util.concurrent.ConcurrentHashMap.Node<kotlin.String!, kotlin.Int!>!>!
+    invisible_fake final override /*1*/ /*fake_override*/ var transferIndex: kotlin.Int
+    invisible_fake final override /*1*/ /*fake_override*/ var values: java.util.concurrent.ConcurrentHashMap.ValuesView<kotlin.String!, kotlin.Int!>!
+    public open override /*1*/ /*fake_override*/ val values: kotlin.collections.MutableCollection<kotlin.Int>
+    invisible_fake final override /*1*/ /*fake_override*/ fun addCount(/*0*/ p0: kotlin.Long, /*1*/ p1: kotlin.Int): kotlin.Unit
+    invisible_fake final override /*1*/ /*fake_override*/ fun batchFor(/*0*/ p0: kotlin.Long): kotlin.Int
+    public open override /*1*/ /*fake_override*/ fun clear(): kotlin.Unit
+    protected/*protected and package*/ open override /*1*/ /*fake_override*/ fun clone(): kotlin.Any!
+    public open override /*1*/ /*fake_override*/ fun compute(/*0*/ p0: kotlin.String, /*1*/ p1: java.util.function.BiFunction<in kotlin.String, in kotlin.Int?, out kotlin.Int?>): kotlin.Int?
+    public open override /*1*/ /*fake_override*/ fun computeIfAbsent(/*0*/ p0: kotlin.String, /*1*/ p1: java.util.function.Function<in kotlin.String, out kotlin.Int>): kotlin.Int
+    public open override /*1*/ /*fake_override*/ fun computeIfPresent(/*0*/ p0: kotlin.String, /*1*/ p1: java.util.function.BiFunction<in kotlin.String, in kotlin.Int, out kotlin.Int?>): kotlin.Int?
+    public open override /*1*/ fun contains(/*0*/ value: kotlin.Any?): kotlin.Boolean
+    public open override /*1*/ /*fake_override*/ fun containsKey(/*0*/ key: kotlin.String): kotlin.Boolean
+    public open override /*1*/ /*fake_override*/ fun containsValue(/*0*/ value: kotlin.Int): kotlin.Boolean
+    public open override /*1*/ /*fake_override*/ fun elements(): java.util.Enumeration<kotlin.Int!>!
+    public open override /*1*/ /*fake_override*/ fun equals(/*0*/ other: kotlin.Any?): kotlin.Boolean
+    public open override /*1*/ /*fake_override*/ fun forEach(/*0*/ p0: java.util.function.BiConsumer<in kotlin.String, in kotlin.Int>): kotlin.Unit
+    public open override /*1*/ /*fake_override*/ fun forEach(/*0*/ p0: kotlin.Long, /*1*/ p1: java.util.function.BiConsumer<in kotlin.String!, in kotlin.Int!>!): kotlin.Unit
+    public open override /*1*/ /*fake_override*/ fun </*0*/ U : kotlin.Any!> forEach(/*0*/ p0: kotlin.Long, /*1*/ p1: java.util.function.BiFunction<in kotlin.String!, in kotlin.Int!, out U!>!, /*2*/ p2: java.util.function.Consumer<in U!>!): kotlin.Unit
+    public open override /*1*/ /*fake_override*/ fun forEachEntry(/*0*/ p0: kotlin.Long, /*1*/ p1: java.util.function.Consumer<in kotlin.collections.(Mutable)Map.(Mutable)Entry<kotlin.String!, kotlin.Int!>!>!): kotlin.Unit
+    public open override /*1*/ /*fake_override*/ fun </*0*/ U : kotlin.Any!> forEachEntry(/*0*/ p0: kotlin.Long, /*1*/ p1: java.util.function.Function<kotlin.collections.(Mutable)Map.(Mutable)Entry<kotlin.String!, kotlin.Int!>!, out U!>!, /*2*/ p2: java.util.function.Consumer<in U!>!): kotlin.Unit
+    public open override /*1*/ /*fake_override*/ fun forEachKey(/*0*/ p0: kotlin.Long, /*1*/ p1: java.util.function.Consumer<in kotlin.String!>!): kotlin.Unit
+    public open override /*1*/ /*fake_override*/ fun </*0*/ U : kotlin.Any!> forEachKey(/*0*/ p0: kotlin.Long, /*1*/ p1: java.util.function.Function<in kotlin.String!, out U!>!, /*2*/ p2: java.util.function.Consumer<in U!>!): kotlin.Unit
+    public open override /*1*/ /*fake_override*/ fun forEachValue(/*0*/ p0: kotlin.Long, /*1*/ p1: java.util.function.Consumer<in kotlin.Int!>!): kotlin.Unit
+    public open override /*1*/ /*fake_override*/ fun </*0*/ U : kotlin.Any!> forEachValue(/*0*/ p0: kotlin.Long, /*1*/ p1: java.util.function.Function<in kotlin.Int!, out U!>!, /*2*/ p2: java.util.function.Consumer<in U!>!): kotlin.Unit
+    invisible_fake final override /*1*/ /*fake_override*/ fun fullAddCount(/*0*/ p0: kotlin.Long, /*1*/ p1: kotlin.Boolean): kotlin.Unit
+    public open override /*1*/ /*fake_override*/ fun get(/*0*/ key: kotlin.String): kotlin.Int?
+    public open override /*1*/ /*fake_override*/ fun getOrDefault(/*0*/ key: kotlin.String, /*1*/ defaultValue: kotlin.Int): kotlin.Int
+    public open override /*1*/ /*fake_override*/ fun hashCode(): kotlin.Int
+    invisible_fake final override /*1*/ /*fake_override*/ fun helpTransfer(/*0*/ p0: kotlin.Array<(out) java.util.concurrent.ConcurrentHashMap.Node<kotlin.String!, kotlin.Int!>!>!, /*1*/ p1: java.util.concurrent.ConcurrentHashMap.Node<kotlin.String!, kotlin.Int!>!): kotlin.Array<(out) java.util.concurrent.ConcurrentHashMap.Node<kotlin.String!, kotlin.Int!>!>!
+    invisible_fake final override /*1*/ /*fake_override*/ fun initTable(): kotlin.Array<(out) java.util.concurrent.ConcurrentHashMap.Node<kotlin.String!, kotlin.Int!>!>!
+    public open override /*1*/ /*fake_override*/ fun isEmpty(): kotlin.Boolean
+    public open override /*1*/ /*fake_override*/ fun keySet(/*0*/ p0: kotlin.Int!): java.util.concurrent.ConcurrentHashMap.KeySetView<kotlin.String!, kotlin.Int!>!
+    public open override /*1*/ /*fake_override*/ fun keys(): java.util.Enumeration<kotlin.String!>!
+    public open override /*1*/ /*fake_override*/ fun mappingCount(): kotlin.Long
+    public open override /*1*/ /*fake_override*/ fun merge(/*0*/ p0: kotlin.String, /*1*/ p1: kotlin.Int, /*2*/ p2: java.util.function.BiFunction<in kotlin.Int, in kotlin.Int, out kotlin.Int?>): kotlin.Int?
+    public open override /*1*/ /*fake_override*/ fun put(/*0*/ key: kotlin.String, /*1*/ value: kotlin.Int): kotlin.Int?
+    public open override /*1*/ /*fake_override*/ fun putAll(/*0*/ from: kotlin.collections.Map<out kotlin.String, kotlin.Int>): kotlin.Unit
+    public open override /*1*/ /*fake_override*/ fun putIfAbsent(/*0*/ p0: kotlin.String, /*1*/ p1: kotlin.Int): kotlin.Int?
+    invisible_fake final override /*1*/ /*fake_override*/ fun putVal(/*0*/ p0: kotlin.String!, /*1*/ p1: kotlin.Int!, /*2*/ p2: kotlin.Boolean): kotlin.Int!
+    invisible_fake open override /*1*/ /*fake_override*/ fun readObject(/*0*/ p0: java.io.ObjectInputStream!): kotlin.Unit
+    public open override /*1*/ /*fake_override*/ fun </*0*/ U : kotlin.Any!> reduce(/*0*/ p0: kotlin.Long, /*1*/ p1: java.util.function.BiFunction<in kotlin.String!, in kotlin.Int!, out U!>!, /*2*/ p2: java.util.function.BiFunction<in U!, in U!, out U!>!): U!
+    public open override /*1*/ /*fake_override*/ fun reduceEntries(/*0*/ p0: kotlin.Long, /*1*/ p1: java.util.function.BiFunction<kotlin.collections.(Mutable)Map.(Mutable)Entry<kotlin.String!, kotlin.Int!>!, kotlin.collections.(Mutable)Map.(Mutable)Entry<kotlin.String!, kotlin.Int!>!, out kotlin.collections.(Mutable)Map.(Mutable)Entry<kotlin.String!, kotlin.Int!>!>!): kotlin.collections.(Mutable)Map.(Mutable)Entry<kotlin.String!, kotlin.Int!>!
+    public open override /*1*/ /*fake_override*/ fun </*0*/ U : kotlin.Any!> reduceEntries(/*0*/ p0: kotlin.Long, /*1*/ p1: java.util.function.Function<kotlin.collections.(Mutable)Map.(Mutable)Entry<kotlin.String!, kotlin.Int!>!, out U!>!, /*2*/ p2: java.util.function.BiFunction<in U!, in U!, out U!>!): U!
+    public open override /*1*/ /*fake_override*/ fun reduceEntriesToDouble(/*0*/ p0: kotlin.Long, /*1*/ p1: java.util.function.ToDoubleFunction<kotlin.collections.(Mutable)Map.(Mutable)Entry<kotlin.String!, kotlin.Int!>!>!, /*2*/ p2: kotlin.Double, /*3*/ p3: java.util.function.DoubleBinaryOperator!): kotlin.Double
+    public open override /*1*/ /*fake_override*/ fun reduceEntriesToInt(/*0*/ p0: kotlin.Long, /*1*/ p1: java.util.function.ToIntFunction<kotlin.collections.(Mutable)Map.(Mutable)Entry<kotlin.String!, kotlin.Int!>!>!, /*2*/ p2: kotlin.Int, /*3*/ p3: java.util.function.IntBinaryOperator!): kotlin.Int
+    public open override /*1*/ /*fake_override*/ fun reduceEntriesToLong(/*0*/ p0: kotlin.Long, /*1*/ p1: java.util.function.ToLongFunction<kotlin.collections.(Mutable)Map.(Mutable)Entry<kotlin.String!, kotlin.Int!>!>!, /*2*/ p2: kotlin.Long, /*3*/ p3: java.util.function.LongBinaryOperator!): kotlin.Long
+    public open override /*1*/ /*fake_override*/ fun reduceKeys(/*0*/ p0: kotlin.Long, /*1*/ p1: java.util.function.BiFunction<in kotlin.String!, in kotlin.String!, out kotlin.String!>!): kotlin.String!
+    public open override /*1*/ /*fake_override*/ fun </*0*/ U : kotlin.Any!> reduceKeys(/*0*/ p0: kotlin.Long, /*1*/ p1: java.util.function.Function<in kotlin.String!, out U!>!, /*2*/ p2: java.util.function.BiFunction<in U!, in U!, out U!>!): U!
+    public open override /*1*/ /*fake_override*/ fun reduceKeysToDouble(/*0*/ p0: kotlin.Long, /*1*/ p1: java.util.function.ToDoubleFunction<in kotlin.String!>!, /*2*/ p2: kotlin.Double, /*3*/ p3: java.util.function.DoubleBinaryOperator!): kotlin.Double
+    public open override /*1*/ /*fake_override*/ fun reduceKeysToInt(/*0*/ p0: kotlin.Long, /*1*/ p1: java.util.function.ToIntFunction<in kotlin.String!>!, /*2*/ p2: kotlin.Int, /*3*/ p3: java.util.function.IntBinaryOperator!): kotlin.Int
+    public open override /*1*/ /*fake_override*/ fun reduceKeysToLong(/*0*/ p0: kotlin.Long, /*1*/ p1: java.util.function.ToLongFunction<in kotlin.String!>!, /*2*/ p2: kotlin.Long, /*3*/ p3: java.util.function.LongBinaryOperator!): kotlin.Long
+    public open override /*1*/ /*fake_override*/ fun reduceToDouble(/*0*/ p0: kotlin.Long, /*1*/ p1: java.util.function.ToDoubleBiFunction<in kotlin.String!, in kotlin.Int!>!, /*2*/ p2: kotlin.Double, /*3*/ p3: java.util.function.DoubleBinaryOperator!): kotlin.Double
+    public open override /*1*/ /*fake_override*/ fun reduceToInt(/*0*/ p0: kotlin.Long, /*1*/ p1: java.util.function.ToIntBiFunction<in kotlin.String!, in kotlin.Int!>!, /*2*/ p2: kotlin.Int, /*3*/ p3: java.util.function.IntBinaryOperator!): kotlin.Int
+    public open override /*1*/ /*fake_override*/ fun reduceToLong(/*0*/ p0: kotlin.Long, /*1*/ p1: java.util.function.ToLongBiFunction<in kotlin.String!, in kotlin.Int!>!, /*2*/ p2: kotlin.Long, /*3*/ p3: java.util.function.LongBinaryOperator!): kotlin.Long
+    public open override /*1*/ /*fake_override*/ fun reduceValues(/*0*/ p0: kotlin.Long, /*1*/ p1: java.util.function.BiFunction<in kotlin.Int!, in kotlin.Int!, out kotlin.Int!>!): kotlin.Int!
+    public open override /*1*/ /*fake_override*/ fun </*0*/ U : kotlin.Any!> reduceValues(/*0*/ p0: kotlin.Long, /*1*/ p1: java.util.function.Function<in kotlin.Int!, out U!>!, /*2*/ p2: java.util.function.BiFunction<in U!, in U!, out U!>!): U!
+    public open override /*1*/ /*fake_override*/ fun reduceValuesToDouble(/*0*/ p0: kotlin.Long, /*1*/ p1: java.util.function.ToDoubleFunction<in kotlin.Int!>!, /*2*/ p2: kotlin.Double, /*3*/ p3: java.util.function.DoubleBinaryOperator!): kotlin.Double
+    public open override /*1*/ /*fake_override*/ fun reduceValuesToInt(/*0*/ p0: kotlin.Long, /*1*/ p1: java.util.function.ToIntFunction<in kotlin.Int!>!, /*2*/ p2: kotlin.Int, /*3*/ p3: java.util.function.IntBinaryOperator!): kotlin.Int
+    public open override /*1*/ /*fake_override*/ fun reduceValuesToLong(/*0*/ p0: kotlin.Long, /*1*/ p1: java.util.function.ToLongFunction<in kotlin.Int!>!, /*2*/ p2: kotlin.Long, /*3*/ p3: java.util.function.LongBinaryOperator!): kotlin.Long
+    public open override /*1*/ /*fake_override*/ fun remove(/*0*/ key: kotlin.String): kotlin.Int?
+    public open override /*1*/ /*fake_override*/ fun remove(/*0*/ key: kotlin.String, /*1*/ value: kotlin.Int): kotlin.Boolean
+    public open override /*1*/ /*fake_override*/ fun replace(/*0*/ p0: kotlin.String, /*1*/ p1: kotlin.Int): kotlin.Int?
+    public open override /*1*/ /*fake_override*/ fun replace(/*0*/ p0: kotlin.String, /*1*/ p1: kotlin.Int, /*2*/ p2: kotlin.Int): kotlin.Boolean
+    public open override /*1*/ /*fake_override*/ fun replaceAll(/*0*/ p0: java.util.function.BiFunction<in kotlin.String, in kotlin.Int, out kotlin.Int>): kotlin.Unit
+    invisible_fake final override /*1*/ /*fake_override*/ fun replaceNode(/*0*/ p0: kotlin.Any!, /*1*/ p1: kotlin.Int!, /*2*/ p2: kotlin.Any!): kotlin.Int!
+    public open override /*1*/ /*fake_override*/ fun </*0*/ U : kotlin.Any!> search(/*0*/ p0: kotlin.Long, /*1*/ p1: java.util.function.BiFunction<in kotlin.String!, in kotlin.Int!, out U!>!): U!
+    public open override /*1*/ /*fake_override*/ fun </*0*/ U : kotlin.Any!> searchEntries(/*0*/ p0: kotlin.Long, /*1*/ p1: java.util.function.Function<kotlin.collections.(Mutable)Map.(Mutable)Entry<kotlin.String!, kotlin.Int!>!, out U!>!): U!
+    public open override /*1*/ /*fake_override*/ fun </*0*/ U : kotlin.Any!> searchKeys(/*0*/ p0: kotlin.Long, /*1*/ p1: java.util.function.Function<in kotlin.String!, out U!>!): U!
+    public open override /*1*/ /*fake_override*/ fun </*0*/ U : kotlin.Any!> searchValues(/*0*/ p0: kotlin.Long, /*1*/ p1: java.util.function.Function<in kotlin.Int!, out U!>!): U!
+    invisible_fake final override /*1*/ /*fake_override*/ fun sumCount(): kotlin.Long
+    public open override /*1*/ /*fake_override*/ fun toString(): kotlin.String
+    invisible_fake final override /*1*/ /*fake_override*/ fun transfer(/*0*/ p0: kotlin.Array<(out) java.util.concurrent.ConcurrentHashMap.Node<kotlin.String!, kotlin.Int!>!>!, /*1*/ p1: kotlin.Array<(out) java.util.concurrent.ConcurrentHashMap.Node<kotlin.String!, kotlin.Int!>!>!): kotlin.Unit
+    invisible_fake final override /*1*/ /*fake_override*/ fun treeifyBin(/*0*/ p0: kotlin.Array<(out) java.util.concurrent.ConcurrentHashMap.Node<kotlin.String!, kotlin.Int!>!>!, /*1*/ p1: kotlin.Int): kotlin.Unit
+    invisible_fake final override /*1*/ /*fake_override*/ fun tryPresize(/*0*/ p0: kotlin.Int): kotlin.Unit
+    invisible_fake open override /*1*/ /*fake_override*/ fun writeObject(/*0*/ p0: java.io.ObjectOutputStream!): kotlin.Unit
+}
+
+public final class C : java.util.concurrent.ConcurrentHashMap<kotlin.String, kotlin.Int> {
+    public constructor C()
+    invisible_fake final override /*1*/ /*fake_override*/ var baseCount: kotlin.Long
+    invisible_fake final override /*1*/ /*fake_override*/ var cellsBusy: kotlin.Int
+    invisible_fake final override /*1*/ /*fake_override*/ var counterCells: kotlin.Array<(out) java.util.concurrent.ConcurrentHashMap.CounterCell!>!
+    public open override /*1*/ /*fake_override*/ val entries: kotlin.collections.MutableSet<kotlin.collections.MutableMap.MutableEntry<kotlin.String, kotlin.Int>>
+    invisible_fake final override /*1*/ /*fake_override*/ var entrySet: java.util.concurrent.ConcurrentHashMap.EntrySetView<kotlin.String!, kotlin.Int!>!
+    invisible_fake final override /*1*/ /*fake_override*/ var keySet: java.util.concurrent.ConcurrentHashMap.KeySetView<kotlin.String!, kotlin.Int!>!
+    public open override /*1*/ /*fake_override*/ val keys: java.util.concurrent.ConcurrentHashMap.KeySetView<kotlin.String!, kotlin.Int!>
+    invisible_fake final override /*1*/ /*fake_override*/ var nextTable: kotlin.Array<(out) java.util.concurrent.ConcurrentHashMap.Node<kotlin.String!, kotlin.Int!>!>!
+    public open override /*1*/ /*fake_override*/ val size: kotlin.Int
+    invisible_fake final override /*1*/ /*fake_override*/ var sizeCtl: kotlin.Int
+    invisible_fake final override /*1*/ /*fake_override*/ var table: kotlin.Array<(out) java.util.concurrent.ConcurrentHashMap.Node<kotlin.String!, kotlin.Int!>!>!
+    invisible_fake final override /*1*/ /*fake_override*/ var transferIndex: kotlin.Int
+    invisible_fake final override /*1*/ /*fake_override*/ var values: java.util.concurrent.ConcurrentHashMap.ValuesView<kotlin.String!, kotlin.Int!>!
+    public open override /*1*/ /*fake_override*/ val values: kotlin.collections.MutableCollection<kotlin.Int>
+    invisible_fake final override /*1*/ /*fake_override*/ fun addCount(/*0*/ p0: kotlin.Long, /*1*/ p1: kotlin.Int): kotlin.Unit
+    invisible_fake final override /*1*/ /*fake_override*/ fun batchFor(/*0*/ p0: kotlin.Long): kotlin.Int
+    public open override /*1*/ /*fake_override*/ fun clear(): kotlin.Unit
+    protected/*protected and package*/ open override /*1*/ /*fake_override*/ fun clone(): kotlin.Any!
+    public open override /*1*/ /*fake_override*/ fun compute(/*0*/ p0: kotlin.String, /*1*/ p1: java.util.function.BiFunction<in kotlin.String, in kotlin.Int?, out kotlin.Int?>): kotlin.Int?
+    public open override /*1*/ /*fake_override*/ fun computeIfAbsent(/*0*/ p0: kotlin.String, /*1*/ p1: java.util.function.Function<in kotlin.String, out kotlin.Int>): kotlin.Int
+    public open override /*1*/ /*fake_override*/ fun computeIfPresent(/*0*/ p0: kotlin.String, /*1*/ p1: java.util.function.BiFunction<in kotlin.String, in kotlin.Int, out kotlin.Int?>): kotlin.Int?
+    public open override /*1*/ fun contains(/*0*/ value: kotlin.Any?): kotlin.Boolean
+    public open override /*1*/ /*fake_override*/ fun containsKey(/*0*/ key: kotlin.String): kotlin.Boolean
+    public open override /*1*/ /*fake_override*/ fun containsValue(/*0*/ value: kotlin.Int): kotlin.Boolean
+    public open override /*1*/ /*fake_override*/ fun elements(): java.util.Enumeration<kotlin.Int!>!
+    public open override /*1*/ /*fake_override*/ fun equals(/*0*/ other: kotlin.Any?): kotlin.Boolean
+    public open override /*1*/ /*fake_override*/ fun forEach(/*0*/ p0: java.util.function.BiConsumer<in kotlin.String, in kotlin.Int>): kotlin.Unit
+    public open override /*1*/ /*fake_override*/ fun forEach(/*0*/ p0: kotlin.Long, /*1*/ p1: java.util.function.BiConsumer<in kotlin.String!, in kotlin.Int!>!): kotlin.Unit
+    public open override /*1*/ /*fake_override*/ fun </*0*/ U : kotlin.Any!> forEach(/*0*/ p0: kotlin.Long, /*1*/ p1: java.util.function.BiFunction<in kotlin.String!, in kotlin.Int!, out U!>!, /*2*/ p2: java.util.function.Consumer<in U!>!): kotlin.Unit
+    public open override /*1*/ /*fake_override*/ fun forEachEntry(/*0*/ p0: kotlin.Long, /*1*/ p1: java.util.function.Consumer<in kotlin.collections.(Mutable)Map.(Mutable)Entry<kotlin.String!, kotlin.Int!>!>!): kotlin.Unit
+    public open override /*1*/ /*fake_override*/ fun </*0*/ U : kotlin.Any!> forEachEntry(/*0*/ p0: kotlin.Long, /*1*/ p1: java.util.function.Function<kotlin.collections.(Mutable)Map.(Mutable)Entry<kotlin.String!, kotlin.Int!>!, out U!>!, /*2*/ p2: java.util.function.Consumer<in U!>!): kotlin.Unit
+    public open override /*1*/ /*fake_override*/ fun forEachKey(/*0*/ p0: kotlin.Long, /*1*/ p1: java.util.function.Consumer<in kotlin.String!>!): kotlin.Unit
+    public open override /*1*/ /*fake_override*/ fun </*0*/ U : kotlin.Any!> forEachKey(/*0*/ p0: kotlin.Long, /*1*/ p1: java.util.function.Function<in kotlin.String!, out U!>!, /*2*/ p2: java.util.function.Consumer<in U!>!): kotlin.Unit
+    public open override /*1*/ /*fake_override*/ fun forEachValue(/*0*/ p0: kotlin.Long, /*1*/ p1: java.util.function.Consumer<in kotlin.Int!>!): kotlin.Unit
+    public open override /*1*/ /*fake_override*/ fun </*0*/ U : kotlin.Any!> forEachValue(/*0*/ p0: kotlin.Long, /*1*/ p1: java.util.function.Function<in kotlin.Int!, out U!>!, /*2*/ p2: java.util.function.Consumer<in U!>!): kotlin.Unit
+    invisible_fake final override /*1*/ /*fake_override*/ fun fullAddCount(/*0*/ p0: kotlin.Long, /*1*/ p1: kotlin.Boolean): kotlin.Unit
+    public open override /*1*/ /*fake_override*/ fun get(/*0*/ key: kotlin.String): kotlin.Int?
+    public open override /*1*/ /*fake_override*/ fun getOrDefault(/*0*/ key: kotlin.String, /*1*/ defaultValue: kotlin.Int): kotlin.Int
+    public open override /*1*/ /*fake_override*/ fun hashCode(): kotlin.Int
+    invisible_fake final override /*1*/ /*fake_override*/ fun helpTransfer(/*0*/ p0: kotlin.Array<(out) java.util.concurrent.ConcurrentHashMap.Node<kotlin.String!, kotlin.Int!>!>!, /*1*/ p1: java.util.concurrent.ConcurrentHashMap.Node<kotlin.String!, kotlin.Int!>!): kotlin.Array<(out) java.util.concurrent.ConcurrentHashMap.Node<kotlin.String!, kotlin.Int!>!>!
+    invisible_fake final override /*1*/ /*fake_override*/ fun initTable(): kotlin.Array<(out) java.util.concurrent.ConcurrentHashMap.Node<kotlin.String!, kotlin.Int!>!>!
+    public open override /*1*/ /*fake_override*/ fun isEmpty(): kotlin.Boolean
+    public open override /*1*/ /*fake_override*/ fun keySet(/*0*/ p0: kotlin.Int!): java.util.concurrent.ConcurrentHashMap.KeySetView<kotlin.String!, kotlin.Int!>!
+    public open override /*1*/ /*fake_override*/ fun keys(): java.util.Enumeration<kotlin.String!>!
+    public open override /*1*/ /*fake_override*/ fun mappingCount(): kotlin.Long
+    public open override /*1*/ /*fake_override*/ fun merge(/*0*/ p0: kotlin.String, /*1*/ p1: kotlin.Int, /*2*/ p2: java.util.function.BiFunction<in kotlin.Int, in kotlin.Int, out kotlin.Int?>): kotlin.Int?
+    public open override /*1*/ /*fake_override*/ fun put(/*0*/ key: kotlin.String, /*1*/ value: kotlin.Int): kotlin.Int?
+    public open override /*1*/ /*fake_override*/ fun putAll(/*0*/ from: kotlin.collections.Map<out kotlin.String, kotlin.Int>): kotlin.Unit
+    public open override /*1*/ /*fake_override*/ fun putIfAbsent(/*0*/ p0: kotlin.String, /*1*/ p1: kotlin.Int): kotlin.Int?
+    invisible_fake final override /*1*/ /*fake_override*/ fun putVal(/*0*/ p0: kotlin.String!, /*1*/ p1: kotlin.Int!, /*2*/ p2: kotlin.Boolean): kotlin.Int!
+    invisible_fake open override /*1*/ /*fake_override*/ fun readObject(/*0*/ p0: java.io.ObjectInputStream!): kotlin.Unit
+    public open override /*1*/ /*fake_override*/ fun </*0*/ U : kotlin.Any!> reduce(/*0*/ p0: kotlin.Long, /*1*/ p1: java.util.function.BiFunction<in kotlin.String!, in kotlin.Int!, out U!>!, /*2*/ p2: java.util.function.BiFunction<in U!, in U!, out U!>!): U!
+    public open override /*1*/ /*fake_override*/ fun reduceEntries(/*0*/ p0: kotlin.Long, /*1*/ p1: java.util.function.BiFunction<kotlin.collections.(Mutable)Map.(Mutable)Entry<kotlin.String!, kotlin.Int!>!, kotlin.collections.(Mutable)Map.(Mutable)Entry<kotlin.String!, kotlin.Int!>!, out kotlin.collections.(Mutable)Map.(Mutable)Entry<kotlin.String!, kotlin.Int!>!>!): kotlin.collections.(Mutable)Map.(Mutable)Entry<kotlin.String!, kotlin.Int!>!
+    public open override /*1*/ /*fake_override*/ fun </*0*/ U : kotlin.Any!> reduceEntries(/*0*/ p0: kotlin.Long, /*1*/ p1: java.util.function.Function<kotlin.collections.(Mutable)Map.(Mutable)Entry<kotlin.String!, kotlin.Int!>!, out U!>!, /*2*/ p2: java.util.function.BiFunction<in U!, in U!, out U!>!): U!
+    public open override /*1*/ /*fake_override*/ fun reduceEntriesToDouble(/*0*/ p0: kotlin.Long, /*1*/ p1: java.util.function.ToDoubleFunction<kotlin.collections.(Mutable)Map.(Mutable)Entry<kotlin.String!, kotlin.Int!>!>!, /*2*/ p2: kotlin.Double, /*3*/ p3: java.util.function.DoubleBinaryOperator!): kotlin.Double
+    public open override /*1*/ /*fake_override*/ fun reduceEntriesToInt(/*0*/ p0: kotlin.Long, /*1*/ p1: java.util.function.ToIntFunction<kotlin.collections.(Mutable)Map.(Mutable)Entry<kotlin.String!, kotlin.Int!>!>!, /*2*/ p2: kotlin.Int, /*3*/ p3: java.util.function.IntBinaryOperator!): kotlin.Int
+    public open override /*1*/ /*fake_override*/ fun reduceEntriesToLong(/*0*/ p0: kotlin.Long, /*1*/ p1: java.util.function.ToLongFunction<kotlin.collections.(Mutable)Map.(Mutable)Entry<kotlin.String!, kotlin.Int!>!>!, /*2*/ p2: kotlin.Long, /*3*/ p3: java.util.function.LongBinaryOperator!): kotlin.Long
+    public open override /*1*/ /*fake_override*/ fun reduceKeys(/*0*/ p0: kotlin.Long, /*1*/ p1: java.util.function.BiFunction<in kotlin.String!, in kotlin.String!, out kotlin.String!>!): kotlin.String!
+    public open override /*1*/ /*fake_override*/ fun </*0*/ U : kotlin.Any!> reduceKeys(/*0*/ p0: kotlin.Long, /*1*/ p1: java.util.function.Function<in kotlin.String!, out U!>!, /*2*/ p2: java.util.function.BiFunction<in U!, in U!, out U!>!): U!
+    public open override /*1*/ /*fake_override*/ fun reduceKeysToDouble(/*0*/ p0: kotlin.Long, /*1*/ p1: java.util.function.ToDoubleFunction<in kotlin.String!>!, /*2*/ p2: kotlin.Double, /*3*/ p3: java.util.function.DoubleBinaryOperator!): kotlin.Double
+    public open override /*1*/ /*fake_override*/ fun reduceKeysToInt(/*0*/ p0: kotlin.Long, /*1*/ p1: java.util.function.ToIntFunction<in kotlin.String!>!, /*2*/ p2: kotlin.Int, /*3*/ p3: java.util.function.IntBinaryOperator!): kotlin.Int
+    public open override /*1*/ /*fake_override*/ fun reduceKeysToLong(/*0*/ p0: kotlin.Long, /*1*/ p1: java.util.function.ToLongFunction<in kotlin.String!>!, /*2*/ p2: kotlin.Long, /*3*/ p3: java.util.function.LongBinaryOperator!): kotlin.Long
+    public open override /*1*/ /*fake_override*/ fun reduceToDouble(/*0*/ p0: kotlin.Long, /*1*/ p1: java.util.function.ToDoubleBiFunction<in kotlin.String!, in kotlin.Int!>!, /*2*/ p2: kotlin.Double, /*3*/ p3: java.util.function.DoubleBinaryOperator!): kotlin.Double
+    public open override /*1*/ /*fake_override*/ fun reduceToInt(/*0*/ p0: kotlin.Long, /*1*/ p1: java.util.function.ToIntBiFunction<in kotlin.String!, in kotlin.Int!>!, /*2*/ p2: kotlin.Int, /*3*/ p3: java.util.function.IntBinaryOperator!): kotlin.Int
+    public open override /*1*/ /*fake_override*/ fun reduceToLong(/*0*/ p0: kotlin.Long, /*1*/ p1: java.util.function.ToLongBiFunction<in kotlin.String!, in kotlin.Int!>!, /*2*/ p2: kotlin.Long, /*3*/ p3: java.util.function.LongBinaryOperator!): kotlin.Long
+    public open override /*1*/ /*fake_override*/ fun reduceValues(/*0*/ p0: kotlin.Long, /*1*/ p1: java.util.function.BiFunction<in kotlin.Int!, in kotlin.Int!, out kotlin.Int!>!): kotlin.Int!
+    public open override /*1*/ /*fake_override*/ fun </*0*/ U : kotlin.Any!> reduceValues(/*0*/ p0: kotlin.Long, /*1*/ p1: java.util.function.Function<in kotlin.Int!, out U!>!, /*2*/ p2: java.util.function.BiFunction<in U!, in U!, out U!>!): U!
+    public open override /*1*/ /*fake_override*/ fun reduceValuesToDouble(/*0*/ p0: kotlin.Long, /*1*/ p1: java.util.function.ToDoubleFunction<in kotlin.Int!>!, /*2*/ p2: kotlin.Double, /*3*/ p3: java.util.function.DoubleBinaryOperator!): kotlin.Double
+    public open override /*1*/ /*fake_override*/ fun reduceValuesToInt(/*0*/ p0: kotlin.Long, /*1*/ p1: java.util.function.ToIntFunction<in kotlin.Int!>!, /*2*/ p2: kotlin.Int, /*3*/ p3: java.util.function.IntBinaryOperator!): kotlin.Int
+    public open override /*1*/ /*fake_override*/ fun reduceValuesToLong(/*0*/ p0: kotlin.Long, /*1*/ p1: java.util.function.ToLongFunction<in kotlin.Int!>!, /*2*/ p2: kotlin.Long, /*3*/ p3: java.util.function.LongBinaryOperator!): kotlin.Long
+    public open override /*1*/ /*fake_override*/ fun remove(/*0*/ key: kotlin.String): kotlin.Int?
+    public open override /*1*/ /*fake_override*/ fun remove(/*0*/ key: kotlin.String, /*1*/ value: kotlin.Int): kotlin.Boolean
+    public open override /*1*/ /*fake_override*/ fun replace(/*0*/ p0: kotlin.String, /*1*/ p1: kotlin.Int): kotlin.Int?
+    public open override /*1*/ /*fake_override*/ fun replace(/*0*/ p0: kotlin.String, /*1*/ p1: kotlin.Int, /*2*/ p2: kotlin.Int): kotlin.Boolean
+    public open override /*1*/ /*fake_override*/ fun replaceAll(/*0*/ p0: java.util.function.BiFunction<in kotlin.String, in kotlin.Int, out kotlin.Int>): kotlin.Unit
+    invisible_fake final override /*1*/ /*fake_override*/ fun replaceNode(/*0*/ p0: kotlin.Any!, /*1*/ p1: kotlin.Int!, /*2*/ p2: kotlin.Any!): kotlin.Int!
+    public open override /*1*/ /*fake_override*/ fun </*0*/ U : kotlin.Any!> search(/*0*/ p0: kotlin.Long, /*1*/ p1: java.util.function.BiFunction<in kotlin.String!, in kotlin.Int!, out U!>!): U!
+    public open override /*1*/ /*fake_override*/ fun </*0*/ U : kotlin.Any!> searchEntries(/*0*/ p0: kotlin.Long, /*1*/ p1: java.util.function.Function<kotlin.collections.(Mutable)Map.(Mutable)Entry<kotlin.String!, kotlin.Int!>!, out U!>!): U!
+    public open override /*1*/ /*fake_override*/ fun </*0*/ U : kotlin.Any!> searchKeys(/*0*/ p0: kotlin.Long, /*1*/ p1: java.util.function.Function<in kotlin.String!, out U!>!): U!
+    public open override /*1*/ /*fake_override*/ fun </*0*/ U : kotlin.Any!> searchValues(/*0*/ p0: kotlin.Long, /*1*/ p1: java.util.function.Function<in kotlin.Int!, out U!>!): U!
+    invisible_fake final override /*1*/ /*fake_override*/ fun sumCount(): kotlin.Long
+    public open override /*1*/ /*fake_override*/ fun toString(): kotlin.String
+    invisible_fake final override /*1*/ /*fake_override*/ fun transfer(/*0*/ p0: kotlin.Array<(out) java.util.concurrent.ConcurrentHashMap.Node<kotlin.String!, kotlin.Int!>!>!, /*1*/ p1: kotlin.Array<(out) java.util.concurrent.ConcurrentHashMap.Node<kotlin.String!, kotlin.Int!>!>!): kotlin.Unit
+    invisible_fake final override /*1*/ /*fake_override*/ fun treeifyBin(/*0*/ p0: kotlin.Array<(out) java.util.concurrent.ConcurrentHashMap.Node<kotlin.String!, kotlin.Int!>!>!, /*1*/ p1: kotlin.Int): kotlin.Unit
+    invisible_fake final override /*1*/ /*fake_override*/ fun tryPresize(/*0*/ p0: kotlin.Int): kotlin.Unit
+    invisible_fake open override /*1*/ /*fake_override*/ fun writeObject(/*0*/ p0: java.io.ObjectOutputStream!): kotlin.Unit
+}
diff --git a/compiler/testData/diagnostics/testsWithStdLib/java/concurrentHashMapContainsError.kt b/compiler/testData/diagnostics/testsWithStdLib/java/concurrentHashMapContainsError.kt
new file mode 100644
index 00000000000..21e60701ba6
--- /dev/null
+++ b/compiler/testData/diagnostics/testsWithStdLib/java/concurrentHashMapContainsError.kt
@@ -0,0 +1,79 @@
+// !LANGUAGE: +ProhibitConcurrentHashMapContains
+// FULL_JDK
+
+class A : java.util.concurrent.ConcurrentHashMap<String, Int>() {
+    operator fun contains(<!UNUSED_PARAMETER!>x<!>: Char): Boolean = true
+}
+class B : java.util.concurrent.ConcurrentHashMap<String, Int>() {
+    override fun contains(value: Any?): Boolean {
+        return super.contains(value)
+    }
+}
+
+class C : java.util.concurrent.ConcurrentHashMap<String, Int>() {
+    operator override fun contains(value: Any?): Boolean {
+        return super.contains(value)
+    }
+}
+
+fun main() {
+    val hm = java.util.concurrent.ConcurrentHashMap<String, Int>()
+    "" <!CONCURRENT_HASH_MAP_CONTAINS_OPERATOR_ERROR!>in<!> hm
+    "" <!CONCURRENT_HASH_MAP_CONTAINS_OPERATOR_ERROR!>!in<!> hm
+    1 <!CONCURRENT_HASH_MAP_CONTAINS_OPERATOR_ERROR!>!in<!> hm
+    2 <!CONCURRENT_HASH_MAP_CONTAINS_OPERATOR_ERROR!>in<!> hm
+
+    hm.contains("")
+    hm.contains(1)
+
+    "" in (hm as Map<String, Int>)
+    "" !in (hm as Map<String, Int>)
+    1 <!TYPE_INFERENCE_CONFLICTING_SUBSTITUTIONS!>in<!> (hm as Map<String, Int>)
+    1 <!TYPE_INFERENCE_CONFLICTING_SUBSTITUTIONS!>!in<!> (hm as Map<String, Int>)
+
+    val a = A()
+    "" <!CONCURRENT_HASH_MAP_CONTAINS_OPERATOR_ERROR!>in<!> a
+    "" <!CONCURRENT_HASH_MAP_CONTAINS_OPERATOR_ERROR!>!in<!> a
+    1 <!CONCURRENT_HASH_MAP_CONTAINS_OPERATOR_ERROR!>!in<!> a
+    2 <!CONCURRENT_HASH_MAP_CONTAINS_OPERATOR_ERROR!>in<!> a
+
+    ' ' in a
+    ' ' !in a
+    a.contains("")
+    a.contains(1)
+
+    "" in (a as Map<String, Int>)
+    "" !in (a as Map<String, Int>)
+    1 <!TYPE_INFERENCE_CONFLICTING_SUBSTITUTIONS!>in<!> (a as Map<String, Int>)
+    1 <!TYPE_INFERENCE_CONFLICTING_SUBSTITUTIONS!>!in<!> (a as Map<String, Int>)
+
+    val b = B()
+    "" <!CONCURRENT_HASH_MAP_CONTAINS_OPERATOR_ERROR!>in<!> b
+    "" <!CONCURRENT_HASH_MAP_CONTAINS_OPERATOR_ERROR!>!in<!> b
+    1 <!CONCURRENT_HASH_MAP_CONTAINS_OPERATOR_ERROR!>!in<!> b
+    2 <!CONCURRENT_HASH_MAP_CONTAINS_OPERATOR_ERROR!>in<!> b
+
+    b.contains("")
+    b.contains(1)
+
+    "" in (b as Map<String, Int>)
+    "" !in (b as Map<String, Int>)
+    1 <!TYPE_INFERENCE_CONFLICTING_SUBSTITUTIONS!>in<!> (b as Map<String, Int>)
+    1 <!TYPE_INFERENCE_CONFLICTING_SUBSTITUTIONS!>!in<!> (b as Map<String, Int>)
+
+    // Actually, we could've allow calls here because the owner explicitly declared as operator, but semantics is still weird
+    val c = C()
+    "" <!CONCURRENT_HASH_MAP_CONTAINS_OPERATOR_ERROR!>in<!> c
+    "" <!CONCURRENT_HASH_MAP_CONTAINS_OPERATOR_ERROR!>!in<!> c
+    1 <!CONCURRENT_HASH_MAP_CONTAINS_OPERATOR_ERROR!>!in<!> c
+    2 <!CONCURRENT_HASH_MAP_CONTAINS_OPERATOR_ERROR!>in<!> c
+
+    c.contains("")
+    c.contains(1)
+
+    "" in (c as Map<String, Int>)
+    "" !in (c as Map<String, Int>)
+    1 <!TYPE_INFERENCE_CONFLICTING_SUBSTITUTIONS!>in<!> (c as Map<String, Int>)
+    1 <!TYPE_INFERENCE_CONFLICTING_SUBSTITUTIONS!>!in<!> (c as Map<String, Int>)
+}
+
diff --git a/compiler/testData/diagnostics/testsWithStdLib/java/concurrentHashMapContainsError.txt b/compiler/testData/diagnostics/testsWithStdLib/java/concurrentHashMapContainsError.txt
new file mode 100644
index 00000000000..0bb9bc22bb0
--- /dev/null
+++ b/compiler/testData/diagnostics/testsWithStdLib/java/concurrentHashMapContainsError.txt
@@ -0,0 +1,274 @@
+package
+
+public fun main(): kotlin.Unit
+
+public final class A : java.util.concurrent.ConcurrentHashMap<kotlin.String, kotlin.Int> {
+    public constructor A()
+    invisible_fake final override /*1*/ /*fake_override*/ var baseCount: kotlin.Long
+    invisible_fake final override /*1*/ /*fake_override*/ var cellsBusy: kotlin.Int
+    invisible_fake final override /*1*/ /*fake_override*/ var counterCells: kotlin.Array<(out) java.util.concurrent.ConcurrentHashMap.CounterCell!>!
+    public open override /*1*/ /*fake_override*/ val entries: kotlin.collections.MutableSet<kotlin.collections.MutableMap.MutableEntry<kotlin.String, kotlin.Int>>
+    invisible_fake final override /*1*/ /*fake_override*/ var entrySet: java.util.concurrent.ConcurrentHashMap.EntrySetView<kotlin.String!, kotlin.Int!>!
+    invisible_fake final override /*1*/ /*fake_override*/ var keySet: java.util.concurrent.ConcurrentHashMap.KeySetView<kotlin.String!, kotlin.Int!>!
+    public open override /*1*/ /*fake_override*/ val keys: java.util.concurrent.ConcurrentHashMap.KeySetView<kotlin.String!, kotlin.Int!>
+    invisible_fake final override /*1*/ /*fake_override*/ var nextTable: kotlin.Array<(out) java.util.concurrent.ConcurrentHashMap.Node<kotlin.String!, kotlin.Int!>!>!
+    public open override /*1*/ /*fake_override*/ val size: kotlin.Int
+    invisible_fake final override /*1*/ /*fake_override*/ var sizeCtl: kotlin.Int
+    invisible_fake final override /*1*/ /*fake_override*/ var table: kotlin.Array<(out) java.util.concurrent.ConcurrentHashMap.Node<kotlin.String!, kotlin.Int!>!>!
+    invisible_fake final override /*1*/ /*fake_override*/ var transferIndex: kotlin.Int
+    invisible_fake final override /*1*/ /*fake_override*/ var values: java.util.concurrent.ConcurrentHashMap.ValuesView<kotlin.String!, kotlin.Int!>!
+    public open override /*1*/ /*fake_override*/ val values: kotlin.collections.MutableCollection<kotlin.Int>
+    invisible_fake final override /*1*/ /*fake_override*/ fun addCount(/*0*/ p0: kotlin.Long, /*1*/ p1: kotlin.Int): kotlin.Unit
+    invisible_fake final override /*1*/ /*fake_override*/ fun batchFor(/*0*/ p0: kotlin.Long): kotlin.Int
+    public open override /*1*/ /*fake_override*/ fun clear(): kotlin.Unit
+    protected/*protected and package*/ open override /*1*/ /*fake_override*/ fun clone(): kotlin.Any!
+    public open override /*1*/ /*fake_override*/ fun compute(/*0*/ p0: kotlin.String, /*1*/ p1: java.util.function.BiFunction<in kotlin.String, in kotlin.Int?, out kotlin.Int?>): kotlin.Int?
+    public open override /*1*/ /*fake_override*/ fun computeIfAbsent(/*0*/ p0: kotlin.String, /*1*/ p1: java.util.function.Function<in kotlin.String, out kotlin.Int>): kotlin.Int
+    public open override /*1*/ /*fake_override*/ fun computeIfPresent(/*0*/ p0: kotlin.String, /*1*/ p1: java.util.function.BiFunction<in kotlin.String, in kotlin.Int, out kotlin.Int?>): kotlin.Int?
+    public open override /*1*/ /*fake_override*/ fun contains(/*0*/ p0: kotlin.Any!): kotlin.Boolean
+    public final operator fun contains(/*0*/ x: kotlin.Char): kotlin.Boolean
+    public open override /*1*/ /*fake_override*/ fun containsKey(/*0*/ key: kotlin.String): kotlin.Boolean
+    public open override /*1*/ /*fake_override*/ fun containsValue(/*0*/ value: kotlin.Int): kotlin.Boolean
+    public open override /*1*/ /*fake_override*/ fun elements(): java.util.Enumeration<kotlin.Int!>!
+    public open override /*1*/ /*fake_override*/ fun equals(/*0*/ other: kotlin.Any?): kotlin.Boolean
+    public open override /*1*/ /*fake_override*/ fun forEach(/*0*/ p0: java.util.function.BiConsumer<in kotlin.String, in kotlin.Int>): kotlin.Unit
+    public open override /*1*/ /*fake_override*/ fun forEach(/*0*/ p0: kotlin.Long, /*1*/ p1: java.util.function.BiConsumer<in kotlin.String!, in kotlin.Int!>!): kotlin.Unit
+    public open override /*1*/ /*fake_override*/ fun </*0*/ U : kotlin.Any!> forEach(/*0*/ p0: kotlin.Long, /*1*/ p1: java.util.function.BiFunction<in kotlin.String!, in kotlin.Int!, out U!>!, /*2*/ p2: java.util.function.Consumer<in U!>!): kotlin.Unit
+    public open override /*1*/ /*fake_override*/ fun forEachEntry(/*0*/ p0: kotlin.Long, /*1*/ p1: java.util.function.Consumer<in kotlin.collections.(Mutable)Map.(Mutable)Entry<kotlin.String!, kotlin.Int!>!>!): kotlin.Unit
+    public open override /*1*/ /*fake_override*/ fun </*0*/ U : kotlin.Any!> forEachEntry(/*0*/ p0: kotlin.Long, /*1*/ p1: java.util.function.Function<kotlin.collections.(Mutable)Map.(Mutable)Entry<kotlin.String!, kotlin.Int!>!, out U!>!, /*2*/ p2: java.util.function.Consumer<in U!>!): kotlin.Unit
+    public open override /*1*/ /*fake_override*/ fun forEachKey(/*0*/ p0: kotlin.Long, /*1*/ p1: java.util.function.Consumer<in kotlin.String!>!): kotlin.Unit
+    public open override /*1*/ /*fake_override*/ fun </*0*/ U : kotlin.Any!> forEachKey(/*0*/ p0: kotlin.Long, /*1*/ p1: java.util.function.Function<in kotlin.String!, out U!>!, /*2*/ p2: java.util.function.Consumer<in U!>!): kotlin.Unit
+    public open override /*1*/ /*fake_override*/ fun forEachValue(/*0*/ p0: kotlin.Long, /*1*/ p1: java.util.function.Consumer<in kotlin.Int!>!): kotlin.Unit
+    public open override /*1*/ /*fake_override*/ fun </*0*/ U : kotlin.Any!> forEachValue(/*0*/ p0: kotlin.Long, /*1*/ p1: java.util.function.Function<in kotlin.Int!, out U!>!, /*2*/ p2: java.util.function.Consumer<in U!>!): kotlin.Unit
+    invisible_fake final override /*1*/ /*fake_override*/ fun fullAddCount(/*0*/ p0: kotlin.Long, /*1*/ p1: kotlin.Boolean): kotlin.Unit
+    public open override /*1*/ /*fake_override*/ fun get(/*0*/ key: kotlin.String): kotlin.Int?
+    public open override /*1*/ /*fake_override*/ fun getOrDefault(/*0*/ key: kotlin.String, /*1*/ defaultValue: kotlin.Int): kotlin.Int
+    public open override /*1*/ /*fake_override*/ fun hashCode(): kotlin.Int
+    invisible_fake final override /*1*/ /*fake_override*/ fun helpTransfer(/*0*/ p0: kotlin.Array<(out) java.util.concurrent.ConcurrentHashMap.Node<kotlin.String!, kotlin.Int!>!>!, /*1*/ p1: java.util.concurrent.ConcurrentHashMap.Node<kotlin.String!, kotlin.Int!>!): kotlin.Array<(out) java.util.concurrent.ConcurrentHashMap.Node<kotlin.String!, kotlin.Int!>!>!
+    invisible_fake final override /*1*/ /*fake_override*/ fun initTable(): kotlin.Array<(out) java.util.concurrent.ConcurrentHashMap.Node<kotlin.String!, kotlin.Int!>!>!
+    public open override /*1*/ /*fake_override*/ fun isEmpty(): kotlin.Boolean
+    public open override /*1*/ /*fake_override*/ fun keySet(/*0*/ p0: kotlin.Int!): java.util.concurrent.ConcurrentHashMap.KeySetView<kotlin.String!, kotlin.Int!>!
+    public open override /*1*/ /*fake_override*/ fun keys(): java.util.Enumeration<kotlin.String!>!
+    public open override /*1*/ /*fake_override*/ fun mappingCount(): kotlin.Long
+    public open override /*1*/ /*fake_override*/ fun merge(/*0*/ p0: kotlin.String, /*1*/ p1: kotlin.Int, /*2*/ p2: java.util.function.BiFunction<in kotlin.Int, in kotlin.Int, out kotlin.Int?>): kotlin.Int?
+    public open override /*1*/ /*fake_override*/ fun put(/*0*/ key: kotlin.String, /*1*/ value: kotlin.Int): kotlin.Int?
+    public open override /*1*/ /*fake_override*/ fun putAll(/*0*/ from: kotlin.collections.Map<out kotlin.String, kotlin.Int>): kotlin.Unit
+    public open override /*1*/ /*fake_override*/ fun putIfAbsent(/*0*/ p0: kotlin.String, /*1*/ p1: kotlin.Int): kotlin.Int?
+    invisible_fake final override /*1*/ /*fake_override*/ fun putVal(/*0*/ p0: kotlin.String!, /*1*/ p1: kotlin.Int!, /*2*/ p2: kotlin.Boolean): kotlin.Int!
+    invisible_fake open override /*1*/ /*fake_override*/ fun readObject(/*0*/ p0: java.io.ObjectInputStream!): kotlin.Unit
+    public open override /*1*/ /*fake_override*/ fun </*0*/ U : kotlin.Any!> reduce(/*0*/ p0: kotlin.Long, /*1*/ p1: java.util.function.BiFunction<in kotlin.String!, in kotlin.Int!, out U!>!, /*2*/ p2: java.util.function.BiFunction<in U!, in U!, out U!>!): U!
+    public open override /*1*/ /*fake_override*/ fun reduceEntries(/*0*/ p0: kotlin.Long, /*1*/ p1: java.util.function.BiFunction<kotlin.collections.(Mutable)Map.(Mutable)Entry<kotlin.String!, kotlin.Int!>!, kotlin.collections.(Mutable)Map.(Mutable)Entry<kotlin.String!, kotlin.Int!>!, out kotlin.collections.(Mutable)Map.(Mutable)Entry<kotlin.String!, kotlin.Int!>!>!): kotlin.collections.(Mutable)Map.(Mutable)Entry<kotlin.String!, kotlin.Int!>!
+    public open override /*1*/ /*fake_override*/ fun </*0*/ U : kotlin.Any!> reduceEntries(/*0*/ p0: kotlin.Long, /*1*/ p1: java.util.function.Function<kotlin.collections.(Mutable)Map.(Mutable)Entry<kotlin.String!, kotlin.Int!>!, out U!>!, /*2*/ p2: java.util.function.BiFunction<in U!, in U!, out U!>!): U!
+    public open override /*1*/ /*fake_override*/ fun reduceEntriesToDouble(/*0*/ p0: kotlin.Long, /*1*/ p1: java.util.function.ToDoubleFunction<kotlin.collections.(Mutable)Map.(Mutable)Entry<kotlin.String!, kotlin.Int!>!>!, /*2*/ p2: kotlin.Double, /*3*/ p3: java.util.function.DoubleBinaryOperator!): kotlin.Double
+    public open override /*1*/ /*fake_override*/ fun reduceEntriesToInt(/*0*/ p0: kotlin.Long, /*1*/ p1: java.util.function.ToIntFunction<kotlin.collections.(Mutable)Map.(Mutable)Entry<kotlin.String!, kotlin.Int!>!>!, /*2*/ p2: kotlin.Int, /*3*/ p3: java.util.function.IntBinaryOperator!): kotlin.Int
+    public open override /*1*/ /*fake_override*/ fun reduceEntriesToLong(/*0*/ p0: kotlin.Long, /*1*/ p1: java.util.function.ToLongFunction<kotlin.collections.(Mutable)Map.(Mutable)Entry<kotlin.String!, kotlin.Int!>!>!, /*2*/ p2: kotlin.Long, /*3*/ p3: java.util.function.LongBinaryOperator!): kotlin.Long
+    public open override /*1*/ /*fake_override*/ fun reduceKeys(/*0*/ p0: kotlin.Long, /*1*/ p1: java.util.function.BiFunction<in kotlin.String!, in kotlin.String!, out kotlin.String!>!): kotlin.String!
+    public open override /*1*/ /*fake_override*/ fun </*0*/ U : kotlin.Any!> reduceKeys(/*0*/ p0: kotlin.Long, /*1*/ p1: java.util.function.Function<in kotlin.String!, out U!>!, /*2*/ p2: java.util.function.BiFunction<in U!, in U!, out U!>!): U!
+    public open override /*1*/ /*fake_override*/ fun reduceKeysToDouble(/*0*/ p0: kotlin.Long, /*1*/ p1: java.util.function.ToDoubleFunction<in kotlin.String!>!, /*2*/ p2: kotlin.Double, /*3*/ p3: java.util.function.DoubleBinaryOperator!): kotlin.Double
+    public open override /*1*/ /*fake_override*/ fun reduceKeysToInt(/*0*/ p0: kotlin.Long, /*1*/ p1: java.util.function.ToIntFunction<in kotlin.String!>!, /*2*/ p2: kotlin.Int, /*3*/ p3: java.util.function.IntBinaryOperator!): kotlin.Int
+    public open override /*1*/ /*fake_override*/ fun reduceKeysToLong(/*0*/ p0: kotlin.Long, /*1*/ p1: java.util.function.ToLongFunction<in kotlin.String!>!, /*2*/ p2: kotlin.Long, /*3*/ p3: java.util.function.LongBinaryOperator!): kotlin.Long
+    public open override /*1*/ /*fake_override*/ fun reduceToDouble(/*0*/ p0: kotlin.Long, /*1*/ p1: java.util.function.ToDoubleBiFunction<in kotlin.String!, in kotlin.Int!>!, /*2*/ p2: kotlin.Double, /*3*/ p3: java.util.function.DoubleBinaryOperator!): kotlin.Double
+    public open override /*1*/ /*fake_override*/ fun reduceToInt(/*0*/ p0: kotlin.Long, /*1*/ p1: java.util.function.ToIntBiFunction<in kotlin.String!, in kotlin.Int!>!, /*2*/ p2: kotlin.Int, /*3*/ p3: java.util.function.IntBinaryOperator!): kotlin.Int
+    public open override /*1*/ /*fake_override*/ fun reduceToLong(/*0*/ p0: kotlin.Long, /*1*/ p1: java.util.function.ToLongBiFunction<in kotlin.String!, in kotlin.Int!>!, /*2*/ p2: kotlin.Long, /*3*/ p3: java.util.function.LongBinaryOperator!): kotlin.Long
+    public open override /*1*/ /*fake_override*/ fun reduceValues(/*0*/ p0: kotlin.Long, /*1*/ p1: java.util.function.BiFunction<in kotlin.Int!, in kotlin.Int!, out kotlin.Int!>!): kotlin.Int!
+    public open override /*1*/ /*fake_override*/ fun </*0*/ U : kotlin.Any!> reduceValues(/*0*/ p0: kotlin.Long, /*1*/ p1: java.util.function.Function<in kotlin.Int!, out U!>!, /*2*/ p2: java.util.function.BiFunction<in U!, in U!, out U!>!): U!
+    public open override /*1*/ /*fake_override*/ fun reduceValuesToDouble(/*0*/ p0: kotlin.Long, /*1*/ p1: java.util.function.ToDoubleFunction<in kotlin.Int!>!, /*2*/ p2: kotlin.Double, /*3*/ p3: java.util.function.DoubleBinaryOperator!): kotlin.Double
+    public open override /*1*/ /*fake_override*/ fun reduceValuesToInt(/*0*/ p0: kotlin.Long, /*1*/ p1: java.util.function.ToIntFunction<in kotlin.Int!>!, /*2*/ p2: kotlin.Int, /*3*/ p3: java.util.function.IntBinaryOperator!): kotlin.Int
+    public open override /*1*/ /*fake_override*/ fun reduceValuesToLong(/*0*/ p0: kotlin.Long, /*1*/ p1: java.util.function.ToLongFunction<in kotlin.Int!>!, /*2*/ p2: kotlin.Long, /*3*/ p3: java.util.function.LongBinaryOperator!): kotlin.Long
+    public open override /*1*/ /*fake_override*/ fun remove(/*0*/ key: kotlin.String): kotlin.Int?
+    public open override /*1*/ /*fake_override*/ fun remove(/*0*/ key: kotlin.String, /*1*/ value: kotlin.Int): kotlin.Boolean
+    public open override /*1*/ /*fake_override*/ fun replace(/*0*/ p0: kotlin.String, /*1*/ p1: kotlin.Int): kotlin.Int?
+    public open override /*1*/ /*fake_override*/ fun replace(/*0*/ p0: kotlin.String, /*1*/ p1: kotlin.Int, /*2*/ p2: kotlin.Int): kotlin.Boolean
+    public open override /*1*/ /*fake_override*/ fun replaceAll(/*0*/ p0: java.util.function.BiFunction<in kotlin.String, in kotlin.Int, out kotlin.Int>): kotlin.Unit
+    invisible_fake final override /*1*/ /*fake_override*/ fun replaceNode(/*0*/ p0: kotlin.Any!, /*1*/ p1: kotlin.Int!, /*2*/ p2: kotlin.Any!): kotlin.Int!
+    public open override /*1*/ /*fake_override*/ fun </*0*/ U : kotlin.Any!> search(/*0*/ p0: kotlin.Long, /*1*/ p1: java.util.function.BiFunction<in kotlin.String!, in kotlin.Int!, out U!>!): U!
+    public open override /*1*/ /*fake_override*/ fun </*0*/ U : kotlin.Any!> searchEntries(/*0*/ p0: kotlin.Long, /*1*/ p1: java.util.function.Function<kotlin.collections.(Mutable)Map.(Mutable)Entry<kotlin.String!, kotlin.Int!>!, out U!>!): U!
+    public open override /*1*/ /*fake_override*/ fun </*0*/ U : kotlin.Any!> searchKeys(/*0*/ p0: kotlin.Long, /*1*/ p1: java.util.function.Function<in kotlin.String!, out U!>!): U!
+    public open override /*1*/ /*fake_override*/ fun </*0*/ U : kotlin.Any!> searchValues(/*0*/ p0: kotlin.Long, /*1*/ p1: java.util.function.Function<in kotlin.Int!, out U!>!): U!
+    invisible_fake final override /*1*/ /*fake_override*/ fun sumCount(): kotlin.Long
+    public open override /*1*/ /*fake_override*/ fun toString(): kotlin.String
+    invisible_fake final override /*1*/ /*fake_override*/ fun transfer(/*0*/ p0: kotlin.Array<(out) java.util.concurrent.ConcurrentHashMap.Node<kotlin.String!, kotlin.Int!>!>!, /*1*/ p1: kotlin.Array<(out) java.util.concurrent.ConcurrentHashMap.Node<kotlin.String!, kotlin.Int!>!>!): kotlin.Unit
+    invisible_fake final override /*1*/ /*fake_override*/ fun treeifyBin(/*0*/ p0: kotlin.Array<(out) java.util.concurrent.ConcurrentHashMap.Node<kotlin.String!, kotlin.Int!>!>!, /*1*/ p1: kotlin.Int): kotlin.Unit
+    invisible_fake final override /*1*/ /*fake_override*/ fun tryPresize(/*0*/ p0: kotlin.Int): kotlin.Unit
+    invisible_fake open override /*1*/ /*fake_override*/ fun writeObject(/*0*/ p0: java.io.ObjectOutputStream!): kotlin.Unit
+}
+
+public final class B : java.util.concurrent.ConcurrentHashMap<kotlin.String, kotlin.Int> {
+    public constructor B()
+    invisible_fake final override /*1*/ /*fake_override*/ var baseCount: kotlin.Long
+    invisible_fake final override /*1*/ /*fake_override*/ var cellsBusy: kotlin.Int
+    invisible_fake final override /*1*/ /*fake_override*/ var counterCells: kotlin.Array<(out) java.util.concurrent.ConcurrentHashMap.CounterCell!>!
+    public open override /*1*/ /*fake_override*/ val entries: kotlin.collections.MutableSet<kotlin.collections.MutableMap.MutableEntry<kotlin.String, kotlin.Int>>
+    invisible_fake final override /*1*/ /*fake_override*/ var entrySet: java.util.concurrent.ConcurrentHashMap.EntrySetView<kotlin.String!, kotlin.Int!>!
+    invisible_fake final override /*1*/ /*fake_override*/ var keySet: java.util.concurrent.ConcurrentHashMap.KeySetView<kotlin.String!, kotlin.Int!>!
+    public open override /*1*/ /*fake_override*/ val keys: java.util.concurrent.ConcurrentHashMap.KeySetView<kotlin.String!, kotlin.Int!>
+    invisible_fake final override /*1*/ /*fake_override*/ var nextTable: kotlin.Array<(out) java.util.concurrent.ConcurrentHashMap.Node<kotlin.String!, kotlin.Int!>!>!
+    public open override /*1*/ /*fake_override*/ val size: kotlin.Int
+    invisible_fake final override /*1*/ /*fake_override*/ var sizeCtl: kotlin.Int
+    invisible_fake final override /*1*/ /*fake_override*/ var table: kotlin.Array<(out) java.util.concurrent.ConcurrentHashMap.Node<kotlin.String!, kotlin.Int!>!>!
+    invisible_fake final override /*1*/ /*fake_override*/ var transferIndex: kotlin.Int
+    invisible_fake final override /*1*/ /*fake_override*/ var values: java.util.concurrent.ConcurrentHashMap.ValuesView<kotlin.String!, kotlin.Int!>!
+    public open override /*1*/ /*fake_override*/ val values: kotlin.collections.MutableCollection<kotlin.Int>
+    invisible_fake final override /*1*/ /*fake_override*/ fun addCount(/*0*/ p0: kotlin.Long, /*1*/ p1: kotlin.Int): kotlin.Unit
+    invisible_fake final override /*1*/ /*fake_override*/ fun batchFor(/*0*/ p0: kotlin.Long): kotlin.Int
+    public open override /*1*/ /*fake_override*/ fun clear(): kotlin.Unit
+    protected/*protected and package*/ open override /*1*/ /*fake_override*/ fun clone(): kotlin.Any!
+    public open override /*1*/ /*fake_override*/ fun compute(/*0*/ p0: kotlin.String, /*1*/ p1: java.util.function.BiFunction<in kotlin.String, in kotlin.Int?, out kotlin.Int?>): kotlin.Int?
+    public open override /*1*/ /*fake_override*/ fun computeIfAbsent(/*0*/ p0: kotlin.String, /*1*/ p1: java.util.function.Function<in kotlin.String, out kotlin.Int>): kotlin.Int
+    public open override /*1*/ /*fake_override*/ fun computeIfPresent(/*0*/ p0: kotlin.String, /*1*/ p1: java.util.function.BiFunction<in kotlin.String, in kotlin.Int, out kotlin.Int?>): kotlin.Int?
+    public open override /*1*/ fun contains(/*0*/ value: kotlin.Any?): kotlin.Boolean
+    public open override /*1*/ /*fake_override*/ fun containsKey(/*0*/ key: kotlin.String): kotlin.Boolean
+    public open override /*1*/ /*fake_override*/ fun containsValue(/*0*/ value: kotlin.Int): kotlin.Boolean
+    public open override /*1*/ /*fake_override*/ fun elements(): java.util.Enumeration<kotlin.Int!>!
+    public open override /*1*/ /*fake_override*/ fun equals(/*0*/ other: kotlin.Any?): kotlin.Boolean
+    public open override /*1*/ /*fake_override*/ fun forEach(/*0*/ p0: java.util.function.BiConsumer<in kotlin.String, in kotlin.Int>): kotlin.Unit
+    public open override /*1*/ /*fake_override*/ fun forEach(/*0*/ p0: kotlin.Long, /*1*/ p1: java.util.function.BiConsumer<in kotlin.String!, in kotlin.Int!>!): kotlin.Unit
+    public open override /*1*/ /*fake_override*/ fun </*0*/ U : kotlin.Any!> forEach(/*0*/ p0: kotlin.Long, /*1*/ p1: java.util.function.BiFunction<in kotlin.String!, in kotlin.Int!, out U!>!, /*2*/ p2: java.util.function.Consumer<in U!>!): kotlin.Unit
+    public open override /*1*/ /*fake_override*/ fun forEachEntry(/*0*/ p0: kotlin.Long, /*1*/ p1: java.util.function.Consumer<in kotlin.collections.(Mutable)Map.(Mutable)Entry<kotlin.String!, kotlin.Int!>!>!): kotlin.Unit
+    public open override /*1*/ /*fake_override*/ fun </*0*/ U : kotlin.Any!> forEachEntry(/*0*/ p0: kotlin.Long, /*1*/ p1: java.util.function.Function<kotlin.collections.(Mutable)Map.(Mutable)Entry<kotlin.String!, kotlin.Int!>!, out U!>!, /*2*/ p2: java.util.function.Consumer<in U!>!): kotlin.Unit
+    public open override /*1*/ /*fake_override*/ fun forEachKey(/*0*/ p0: kotlin.Long, /*1*/ p1: java.util.function.Consumer<in kotlin.String!>!): kotlin.Unit
+    public open override /*1*/ /*fake_override*/ fun </*0*/ U : kotlin.Any!> forEachKey(/*0*/ p0: kotlin.Long, /*1*/ p1: java.util.function.Function<in kotlin.String!, out U!>!, /*2*/ p2: java.util.function.Consumer<in U!>!): kotlin.Unit
+    public open override /*1*/ /*fake_override*/ fun forEachValue(/*0*/ p0: kotlin.Long, /*1*/ p1: java.util.function.Consumer<in kotlin.Int!>!): kotlin.Unit
+    public open override /*1*/ /*fake_override*/ fun </*0*/ U : kotlin.Any!> forEachValue(/*0*/ p0: kotlin.Long, /*1*/ p1: java.util.function.Function<in kotlin.Int!, out U!>!, /*2*/ p2: java.util.function.Consumer<in U!>!): kotlin.Unit
+    invisible_fake final override /*1*/ /*fake_override*/ fun fullAddCount(/*0*/ p0: kotlin.Long, /*1*/ p1: kotlin.Boolean): kotlin.Unit
+    public open override /*1*/ /*fake_override*/ fun get(/*0*/ key: kotlin.String): kotlin.Int?
+    public open override /*1*/ /*fake_override*/ fun getOrDefault(/*0*/ key: kotlin.String, /*1*/ defaultValue: kotlin.Int): kotlin.Int
+    public open override /*1*/ /*fake_override*/ fun hashCode(): kotlin.Int
+    invisible_fake final override /*1*/ /*fake_override*/ fun helpTransfer(/*0*/ p0: kotlin.Array<(out) java.util.concurrent.ConcurrentHashMap.Node<kotlin.String!, kotlin.Int!>!>!, /*1*/ p1: java.util.concurrent.ConcurrentHashMap.Node<kotlin.String!, kotlin.Int!>!): kotlin.Array<(out) java.util.concurrent.ConcurrentHashMap.Node<kotlin.String!, kotlin.Int!>!>!
+    invisible_fake final override /*1*/ /*fake_override*/ fun initTable(): kotlin.Array<(out) java.util.concurrent.ConcurrentHashMap.Node<kotlin.String!, kotlin.Int!>!>!
+    public open override /*1*/ /*fake_override*/ fun isEmpty(): kotlin.Boolean
+    public open override /*1*/ /*fake_override*/ fun keySet(/*0*/ p0: kotlin.Int!): java.util.concurrent.ConcurrentHashMap.KeySetView<kotlin.String!, kotlin.Int!>!
+    public open override /*1*/ /*fake_override*/ fun keys(): java.util.Enumeration<kotlin.String!>!
+    public open override /*1*/ /*fake_override*/ fun mappingCount(): kotlin.Long
+    public open override /*1*/ /*fake_override*/ fun merge(/*0*/ p0: kotlin.String, /*1*/ p1: kotlin.Int, /*2*/ p2: java.util.function.BiFunction<in kotlin.Int, in kotlin.Int, out kotlin.Int?>): kotlin.Int?
+    public open override /*1*/ /*fake_override*/ fun put(/*0*/ key: kotlin.String, /*1*/ value: kotlin.Int): kotlin.Int?
+    public open override /*1*/ /*fake_override*/ fun putAll(/*0*/ from: kotlin.collections.Map<out kotlin.String, kotlin.Int>): kotlin.Unit
+    public open override /*1*/ /*fake_override*/ fun putIfAbsent(/*0*/ p0: kotlin.String, /*1*/ p1: kotlin.Int): kotlin.Int?
+    invisible_fake final override /*1*/ /*fake_override*/ fun putVal(/*0*/ p0: kotlin.String!, /*1*/ p1: kotlin.Int!, /*2*/ p2: kotlin.Boolean): kotlin.Int!
+    invisible_fake open override /*1*/ /*fake_override*/ fun readObject(/*0*/ p0: java.io.ObjectInputStream!): kotlin.Unit
+    public open override /*1*/ /*fake_override*/ fun </*0*/ U : kotlin.Any!> reduce(/*0*/ p0: kotlin.Long, /*1*/ p1: java.util.function.BiFunction<in kotlin.String!, in kotlin.Int!, out U!>!, /*2*/ p2: java.util.function.BiFunction<in U!, in U!, out U!>!): U!
+    public open override /*1*/ /*fake_override*/ fun reduceEntries(/*0*/ p0: kotlin.Long, /*1*/ p1: java.util.function.BiFunction<kotlin.collections.(Mutable)Map.(Mutable)Entry<kotlin.String!, kotlin.Int!>!, kotlin.collections.(Mutable)Map.(Mutable)Entry<kotlin.String!, kotlin.Int!>!, out kotlin.collections.(Mutable)Map.(Mutable)Entry<kotlin.String!, kotlin.Int!>!>!): kotlin.collections.(Mutable)Map.(Mutable)Entry<kotlin.String!, kotlin.Int!>!
+    public open override /*1*/ /*fake_override*/ fun </*0*/ U : kotlin.Any!> reduceEntries(/*0*/ p0: kotlin.Long, /*1*/ p1: java.util.function.Function<kotlin.collections.(Mutable)Map.(Mutable)Entry<kotlin.String!, kotlin.Int!>!, out U!>!, /*2*/ p2: java.util.function.BiFunction<in U!, in U!, out U!>!): U!
+    public open override /*1*/ /*fake_override*/ fun reduceEntriesToDouble(/*0*/ p0: kotlin.Long, /*1*/ p1: java.util.function.ToDoubleFunction<kotlin.collections.(Mutable)Map.(Mutable)Entry<kotlin.String!, kotlin.Int!>!>!, /*2*/ p2: kotlin.Double, /*3*/ p3: java.util.function.DoubleBinaryOperator!): kotlin.Double
+    public open override /*1*/ /*fake_override*/ fun reduceEntriesToInt(/*0*/ p0: kotlin.Long, /*1*/ p1: java.util.function.ToIntFunction<kotlin.collections.(Mutable)Map.(Mutable)Entry<kotlin.String!, kotlin.Int!>!>!, /*2*/ p2: kotlin.Int, /*3*/ p3: java.util.function.IntBinaryOperator!): kotlin.Int
+    public open override /*1*/ /*fake_override*/ fun reduceEntriesToLong(/*0*/ p0: kotlin.Long, /*1*/ p1: java.util.function.ToLongFunction<kotlin.collections.(Mutable)Map.(Mutable)Entry<kotlin.String!, kotlin.Int!>!>!, /*2*/ p2: kotlin.Long, /*3*/ p3: java.util.function.LongBinaryOperator!): kotlin.Long
+    public open override /*1*/ /*fake_override*/ fun reduceKeys(/*0*/ p0: kotlin.Long, /*1*/ p1: java.util.function.BiFunction<in kotlin.String!, in kotlin.String!, out kotlin.String!>!): kotlin.String!
+    public open override /*1*/ /*fake_override*/ fun </*0*/ U : kotlin.Any!> reduceKeys(/*0*/ p0: kotlin.Long, /*1*/ p1: java.util.function.Function<in kotlin.String!, out U!>!, /*2*/ p2: java.util.function.BiFunction<in U!, in U!, out U!>!): U!
+    public open override /*1*/ /*fake_override*/ fun reduceKeysToDouble(/*0*/ p0: kotlin.Long, /*1*/ p1: java.util.function.ToDoubleFunction<in kotlin.String!>!, /*2*/ p2: kotlin.Double, /*3*/ p3: java.util.function.DoubleBinaryOperator!): kotlin.Double
+    public open override /*1*/ /*fake_override*/ fun reduceKeysToInt(/*0*/ p0: kotlin.Long, /*1*/ p1: java.util.function.ToIntFunction<in kotlin.String!>!, /*2*/ p2: kotlin.Int, /*3*/ p3: java.util.function.IntBinaryOperator!): kotlin.Int
+    public open override /*1*/ /*fake_override*/ fun reduceKeysToLong(/*0*/ p0: kotlin.Long, /*1*/ p1: java.util.function.ToLongFunction<in kotlin.String!>!, /*2*/ p2: kotlin.Long, /*3*/ p3: java.util.function.LongBinaryOperator!): kotlin.Long
+    public open override /*1*/ /*fake_override*/ fun reduceToDouble(/*0*/ p0: kotlin.Long, /*1*/ p1: java.util.function.ToDoubleBiFunction<in kotlin.String!, in kotlin.Int!>!, /*2*/ p2: kotlin.Double, /*3*/ p3: java.util.function.DoubleBinaryOperator!): kotlin.Double
+    public open override /*1*/ /*fake_override*/ fun reduceToInt(/*0*/ p0: kotlin.Long, /*1*/ p1: java.util.function.ToIntBiFunction<in kotlin.String!, in kotlin.Int!>!, /*2*/ p2: kotlin.Int, /*3*/ p3: java.util.function.IntBinaryOperator!): kotlin.Int
+    public open override /*1*/ /*fake_override*/ fun reduceToLong(/*0*/ p0: kotlin.Long, /*1*/ p1: java.util.function.ToLongBiFunction<in kotlin.String!, in kotlin.Int!>!, /*2*/ p2: kotlin.Long, /*3*/ p3: java.util.function.LongBinaryOperator!): kotlin.Long
+    public open override /*1*/ /*fake_override*/ fun reduceValues(/*0*/ p0: kotlin.Long, /*1*/ p1: java.util.function.BiFunction<in kotlin.Int!, in kotlin.Int!, out kotlin.Int!>!): kotlin.Int!
+    public open override /*1*/ /*fake_override*/ fun </*0*/ U : kotlin.Any!> reduceValues(/*0*/ p0: kotlin.Long, /*1*/ p1: java.util.function.Function<in kotlin.Int!, out U!>!, /*2*/ p2: java.util.function.BiFunction<in U!, in U!, out U!>!): U!
+    public open override /*1*/ /*fake_override*/ fun reduceValuesToDouble(/*0*/ p0: kotlin.Long, /*1*/ p1: java.util.function.ToDoubleFunction<in kotlin.Int!>!, /*2*/ p2: kotlin.Double, /*3*/ p3: java.util.function.DoubleBinaryOperator!): kotlin.Double
+    public open override /*1*/ /*fake_override*/ fun reduceValuesToInt(/*0*/ p0: kotlin.Long, /*1*/ p1: java.util.function.ToIntFunction<in kotlin.Int!>!, /*2*/ p2: kotlin.Int, /*3*/ p3: java.util.function.IntBinaryOperator!): kotlin.Int
+    public open override /*1*/ /*fake_override*/ fun reduceValuesToLong(/*0*/ p0: kotlin.Long, /*1*/ p1: java.util.function.ToLongFunction<in kotlin.Int!>!, /*2*/ p2: kotlin.Long, /*3*/ p3: java.util.function.LongBinaryOperator!): kotlin.Long
+    public open override /*1*/ /*fake_override*/ fun remove(/*0*/ key: kotlin.String): kotlin.Int?
+    public open override /*1*/ /*fake_override*/ fun remove(/*0*/ key: kotlin.String, /*1*/ value: kotlin.Int): kotlin.Boolean
+    public open override /*1*/ /*fake_override*/ fun replace(/*0*/ p0: kotlin.String, /*1*/ p1: kotlin.Int): kotlin.Int?
+    public open override /*1*/ /*fake_override*/ fun replace(/*0*/ p0: kotlin.String, /*1*/ p1: kotlin.Int, /*2*/ p2: kotlin.Int): kotlin.Boolean
+    public open override /*1*/ /*fake_override*/ fun replaceAll(/*0*/ p0: java.util.function.BiFunction<in kotlin.String, in kotlin.Int, out kotlin.Int>): kotlin.Unit
+    invisible_fake final override /*1*/ /*fake_override*/ fun replaceNode(/*0*/ p0: kotlin.Any!, /*1*/ p1: kotlin.Int!, /*2*/ p2: kotlin.Any!): kotlin.Int!
+    public open override /*1*/ /*fake_override*/ fun </*0*/ U : kotlin.Any!> search(/*0*/ p0: kotlin.Long, /*1*/ p1: java.util.function.BiFunction<in kotlin.String!, in kotlin.Int!, out U!>!): U!
+    public open override /*1*/ /*fake_override*/ fun </*0*/ U : kotlin.Any!> searchEntries(/*0*/ p0: kotlin.Long, /*1*/ p1: java.util.function.Function<kotlin.collections.(Mutable)Map.(Mutable)Entry<kotlin.String!, kotlin.Int!>!, out U!>!): U!
+    public open override /*1*/ /*fake_override*/ fun </*0*/ U : kotlin.Any!> searchKeys(/*0*/ p0: kotlin.Long, /*1*/ p1: java.util.function.Function<in kotlin.String!, out U!>!): U!
+    public open override /*1*/ /*fake_override*/ fun </*0*/ U : kotlin.Any!> searchValues(/*0*/ p0: kotlin.Long, /*1*/ p1: java.util.function.Function<in kotlin.Int!, out U!>!): U!
+    invisible_fake final override /*1*/ /*fake_override*/ fun sumCount(): kotlin.Long
+    public open override /*1*/ /*fake_override*/ fun toString(): kotlin.String
+    invisible_fake final override /*1*/ /*fake_override*/ fun transfer(/*0*/ p0: kotlin.Array<(out) java.util.concurrent.ConcurrentHashMap.Node<kotlin.String!, kotlin.Int!>!>!, /*1*/ p1: kotlin.Array<(out) java.util.concurrent.ConcurrentHashMap.Node<kotlin.String!, kotlin.Int!>!>!): kotlin.Unit
+    invisible_fake final override /*1*/ /*fake_override*/ fun treeifyBin(/*0*/ p0: kotlin.Array<(out) java.util.concurrent.ConcurrentHashMap.Node<kotlin.String!, kotlin.Int!>!>!, /*1*/ p1: kotlin.Int): kotlin.Unit
+    invisible_fake final override /*1*/ /*fake_override*/ fun tryPresize(/*0*/ p0: kotlin.Int): kotlin.Unit
+    invisible_fake open override /*1*/ /*fake_override*/ fun writeObject(/*0*/ p0: java.io.ObjectOutputStream!): kotlin.Unit
+}
+
+public final class C : java.util.concurrent.ConcurrentHashMap<kotlin.String, kotlin.Int> {
+    public constructor C()
+    invisible_fake final override /*1*/ /*fake_override*/ var baseCount: kotlin.Long
+    invisible_fake final override /*1*/ /*fake_override*/ var cellsBusy: kotlin.Int
+    invisible_fake final override /*1*/ /*fake_override*/ var counterCells: kotlin.Array<(out) java.util.concurrent.ConcurrentHashMap.CounterCell!>!
+    public open override /*1*/ /*fake_override*/ val entries: kotlin.collections.MutableSet<kotlin.collections.MutableMap.MutableEntry<kotlin.String, kotlin.Int>>
+    invisible_fake final override /*1*/ /*fake_override*/ var entrySet: java.util.concurrent.ConcurrentHashMap.EntrySetView<kotlin.String!, kotlin.Int!>!
+    invisible_fake final override /*1*/ /*fake_override*/ var keySet: java.util.concurrent.ConcurrentHashMap.KeySetView<kotlin.String!, kotlin.Int!>!
+    public open override /*1*/ /*fake_override*/ val keys: java.util.concurrent.ConcurrentHashMap.KeySetView<kotlin.String!, kotlin.Int!>
+    invisible_fake final override /*1*/ /*fake_override*/ var nextTable: kotlin.Array<(out) java.util.concurrent.ConcurrentHashMap.Node<kotlin.String!, kotlin.Int!>!>!
+    public open override /*1*/ /*fake_override*/ val size: kotlin.Int
+    invisible_fake final override /*1*/ /*fake_override*/ var sizeCtl: kotlin.Int
+    invisible_fake final override /*1*/ /*fake_override*/ var table: kotlin.Array<(out) java.util.concurrent.ConcurrentHashMap.Node<kotlin.String!, kotlin.Int!>!>!
+    invisible_fake final override /*1*/ /*fake_override*/ var transferIndex: kotlin.Int
+    invisible_fake final override /*1*/ /*fake_override*/ var values: java.util.concurrent.ConcurrentHashMap.ValuesView<kotlin.String!, kotlin.Int!>!
+    public open override /*1*/ /*fake_override*/ val values: kotlin.collections.MutableCollection<kotlin.Int>
+    invisible_fake final override /*1*/ /*fake_override*/ fun addCount(/*0*/ p0: kotlin.Long, /*1*/ p1: kotlin.Int): kotlin.Unit
+    invisible_fake final override /*1*/ /*fake_override*/ fun batchFor(/*0*/ p0: kotlin.Long): kotlin.Int
+    public open override /*1*/ /*fake_override*/ fun clear(): kotlin.Unit
+    protected/*protected and package*/ open override /*1*/ /*fake_override*/ fun clone(): kotlin.Any!
+    public open override /*1*/ /*fake_override*/ fun compute(/*0*/ p0: kotlin.String, /*1*/ p1: java.util.function.BiFunction<in kotlin.String, in kotlin.Int?, out kotlin.Int?>): kotlin.Int?
+    public open override /*1*/ /*fake_override*/ fun computeIfAbsent(/*0*/ p0: kotlin.String, /*1*/ p1: java.util.function.Function<in kotlin.String, out kotlin.Int>): kotlin.Int
+    public open override /*1*/ /*fake_override*/ fun computeIfPresent(/*0*/ p0: kotlin.String, /*1*/ p1: java.util.function.BiFunction<in kotlin.String, in kotlin.Int, out kotlin.Int?>): kotlin.Int?
+    public open override /*1*/ fun contains(/*0*/ value: kotlin.Any?): kotlin.Boolean
+    public open override /*1*/ /*fake_override*/ fun containsKey(/*0*/ key: kotlin.String): kotlin.Boolean
+    public open override /*1*/ /*fake_override*/ fun containsValue(/*0*/ value: kotlin.Int): kotlin.Boolean
+    public open override /*1*/ /*fake_override*/ fun elements(): java.util.Enumeration<kotlin.Int!>!
+    public open override /*1*/ /*fake_override*/ fun equals(/*0*/ other: kotlin.Any?): kotlin.Boolean
+    public open override /*1*/ /*fake_override*/ fun forEach(/*0*/ p0: java.util.function.BiConsumer<in kotlin.String, in kotlin.Int>): kotlin.Unit
+    public open override /*1*/ /*fake_override*/ fun forEach(/*0*/ p0: kotlin.Long, /*1*/ p1: java.util.function.BiConsumer<in kotlin.String!, in kotlin.Int!>!): kotlin.Unit
+    public open override /*1*/ /*fake_override*/ fun </*0*/ U : kotlin.Any!> forEach(/*0*/ p0: kotlin.Long, /*1*/ p1: java.util.function.BiFunction<in kotlin.String!, in kotlin.Int!, out U!>!, /*2*/ p2: java.util.function.Consumer<in U!>!): kotlin.Unit
+    public open override /*1*/ /*fake_override*/ fun forEachEntry(/*0*/ p0: kotlin.Long, /*1*/ p1: java.util.function.Consumer<in kotlin.collections.(Mutable)Map.(Mutable)Entry<kotlin.String!, kotlin.Int!>!>!): kotlin.Unit
+    public open override /*1*/ /*fake_override*/ fun </*0*/ U : kotlin.Any!> forEachEntry(/*0*/ p0: kotlin.Long, /*1*/ p1: java.util.function.Function<kotlin.collections.(Mutable)Map.(Mutable)Entry<kotlin.String!, kotlin.Int!>!, out U!>!, /*2*/ p2: java.util.function.Consumer<in U!>!): kotlin.Unit
+    public open override /*1*/ /*fake_override*/ fun forEachKey(/*0*/ p0: kotlin.Long, /*1*/ p1: java.util.function.Consumer<in kotlin.String!>!): kotlin.Unit
+    public open override /*1*/ /*fake_override*/ fun </*0*/ U : kotlin.Any!> forEachKey(/*0*/ p0: kotlin.Long, /*1*/ p1: java.util.function.Function<in kotlin.String!, out U!>!, /*2*/ p2: java.util.function.Consumer<in U!>!): kotlin.Unit
+    public open override /*1*/ /*fake_override*/ fun forEachValue(/*0*/ p0: kotlin.Long, /*1*/ p1: java.util.function.Consumer<in kotlin.Int!>!): kotlin.Unit
+    public open override /*1*/ /*fake_override*/ fun </*0*/ U : kotlin.Any!> forEachValue(/*0*/ p0: kotlin.Long, /*1*/ p1: java.util.function.Function<in kotlin.Int!, out U!>!, /*2*/ p2: java.util.function.Consumer<in U!>!): kotlin.Unit
+    invisible_fake final override /*1*/ /*fake_override*/ fun fullAddCount(/*0*/ p0: kotlin.Long, /*1*/ p1: kotlin.Boolean): kotlin.Unit
+    public open override /*1*/ /*fake_override*/ fun get(/*0*/ key: kotlin.String): kotlin.Int?
+    public open override /*1*/ /*fake_override*/ fun getOrDefault(/*0*/ key: kotlin.String, /*1*/ defaultValue: kotlin.Int): kotlin.Int
+    public open override /*1*/ /*fake_override*/ fun hashCode(): kotlin.Int
+    invisible_fake final override /*1*/ /*fake_override*/ fun helpTransfer(/*0*/ p0: kotlin.Array<(out) java.util.concurrent.ConcurrentHashMap.Node<kotlin.String!, kotlin.Int!>!>!, /*1*/ p1: java.util.concurrent.ConcurrentHashMap.Node<kotlin.String!, kotlin.Int!>!): kotlin.Array<(out) java.util.concurrent.ConcurrentHashMap.Node<kotlin.String!, kotlin.Int!>!>!
+    invisible_fake final override /*1*/ /*fake_override*/ fun initTable(): kotlin.Array<(out) java.util.concurrent.ConcurrentHashMap.Node<kotlin.String!, kotlin.Int!>!>!
+    public open override /*1*/ /*fake_override*/ fun isEmpty(): kotlin.Boolean
+    public open override /*1*/ /*fake_override*/ fun keySet(/*0*/ p0: kotlin.Int!): java.util.concurrent.ConcurrentHashMap.KeySetView<kotlin.String!, kotlin.Int!>!
+    public open override /*1*/ /*fake_override*/ fun keys(): java.util.Enumeration<kotlin.String!>!
+    public open override /*1*/ /*fake_override*/ fun mappingCount(): kotlin.Long
+    public open override /*1*/ /*fake_override*/ fun merge(/*0*/ p0: kotlin.String, /*1*/ p1: kotlin.Int, /*2*/ p2: java.util.function.BiFunction<in kotlin.Int, in kotlin.Int, out kotlin.Int?>): kotlin.Int?
+    public open override /*1*/ /*fake_override*/ fun put(/*0*/ key: kotlin.String, /*1*/ value: kotlin.Int): kotlin.Int?
+    public open override /*1*/ /*fake_override*/ fun putAll(/*0*/ from: kotlin.collections.Map<out kotlin.String, kotlin.Int>): kotlin.Unit
+    public open override /*1*/ /*fake_override*/ fun putIfAbsent(/*0*/ p0: kotlin.String, /*1*/ p1: kotlin.Int): kotlin.Int?
+    invisible_fake final override /*1*/ /*fake_override*/ fun putVal(/*0*/ p0: kotlin.String!, /*1*/ p1: kotlin.Int!, /*2*/ p2: kotlin.Boolean): kotlin.Int!
+    invisible_fake open override /*1*/ /*fake_override*/ fun readObject(/*0*/ p0: java.io.ObjectInputStream!): kotlin.Unit
+    public open override /*1*/ /*fake_override*/ fun </*0*/ U : kotlin.Any!> reduce(/*0*/ p0: kotlin.Long, /*1*/ p1: java.util.function.BiFunction<in kotlin.String!, in kotlin.Int!, out U!>!, /*2*/ p2: java.util.function.BiFunction<in U!, in U!, out U!>!): U!
+    public open override /*1*/ /*fake_override*/ fun reduceEntries(/*0*/ p0: kotlin.Long, /*1*/ p1: java.util.function.BiFunction<kotlin.collections.(Mutable)Map.(Mutable)Entry<kotlin.String!, kotlin.Int!>!, kotlin.collections.(Mutable)Map.(Mutable)Entry<kotlin.String!, kotlin.Int!>!, out kotlin.collections.(Mutable)Map.(Mutable)Entry<kotlin.String!, kotlin.Int!>!>!): kotlin.collections.(Mutable)Map.(Mutable)Entry<kotlin.String!, kotlin.Int!>!
+    public open override /*1*/ /*fake_override*/ fun </*0*/ U : kotlin.Any!> reduceEntries(/*0*/ p0: kotlin.Long, /*1*/ p1: java.util.function.Function<kotlin.collections.(Mutable)Map.(Mutable)Entry<kotlin.String!, kotlin.Int!>!, out U!>!, /*2*/ p2: java.util.function.BiFunction<in U!, in U!, out U!>!): U!
+    public open override /*1*/ /*fake_override*/ fun reduceEntriesToDouble(/*0*/ p0: kotlin.Long, /*1*/ p1: java.util.function.ToDoubleFunction<kotlin.collections.(Mutable)Map.(Mutable)Entry<kotlin.String!, kotlin.Int!>!>!, /*2*/ p2: kotlin.Double, /*3*/ p3: java.util.function.DoubleBinaryOperator!): kotlin.Double
+    public open override /*1*/ /*fake_override*/ fun reduceEntriesToInt(/*0*/ p0: kotlin.Long, /*1*/ p1: java.util.function.ToIntFunction<kotlin.collections.(Mutable)Map.(Mutable)Entry<kotlin.String!, kotlin.Int!>!>!, /*2*/ p2: kotlin.Int, /*3*/ p3: java.util.function.IntBinaryOperator!): kotlin.Int
+    public open override /*1*/ /*fake_override*/ fun reduceEntriesToLong(/*0*/ p0: kotlin.Long, /*1*/ p1: java.util.function.ToLongFunction<kotlin.collections.(Mutable)Map.(Mutable)Entry<kotlin.String!, kotlin.Int!>!>!, /*2*/ p2: kotlin.Long, /*3*/ p3: java.util.function.LongBinaryOperator!): kotlin.Long
+    public open override /*1*/ /*fake_override*/ fun reduceKeys(/*0*/ p0: kotlin.Long, /*1*/ p1: java.util.function.BiFunction<in kotlin.String!, in kotlin.String!, out kotlin.String!>!): kotlin.String!
+    public open override /*1*/ /*fake_override*/ fun </*0*/ U : kotlin.Any!> reduceKeys(/*0*/ p0: kotlin.Long, /*1*/ p1: java.util.function.Function<in kotlin.String!, out U!>!, /*2*/ p2: java.util.function.BiFunction<in U!, in U!, out U!>!): U!
+    public open override /*1*/ /*fake_override*/ fun reduceKeysToDouble(/*0*/ p0: kotlin.Long, /*1*/ p1: java.util.function.ToDoubleFunction<in kotlin.String!>!, /*2*/ p2: kotlin.Double, /*3*/ p3: java.util.function.DoubleBinaryOperator!): kotlin.Double
+    public open override /*1*/ /*fake_override*/ fun reduceKeysToInt(/*0*/ p0: kotlin.Long, /*1*/ p1: java.util.function.ToIntFunction<in kotlin.String!>!, /*2*/ p2: kotlin.Int, /*3*/ p3: java.util.function.IntBinaryOperator!): kotlin.Int
+    public open override /*1*/ /*fake_override*/ fun reduceKeysToLong(/*0*/ p0: kotlin.Long, /*1*/ p1: java.util.function.ToLongFunction<in kotlin.String!>!, /*2*/ p2: kotlin.Long, /*3*/ p3: java.util.function.LongBinaryOperator!): kotlin.Long
+    public open override /*1*/ /*fake_override*/ fun reduceToDouble(/*0*/ p0: kotlin.Long, /*1*/ p1: java.util.function.ToDoubleBiFunction<in kotlin.String!, in kotlin.Int!>!, /*2*/ p2: kotlin.Double, /*3*/ p3: java.util.function.DoubleBinaryOperator!): kotlin.Double
+    public open override /*1*/ /*fake_override*/ fun reduceToInt(/*0*/ p0: kotlin.Long, /*1*/ p1: java.util.function.ToIntBiFunction<in kotlin.String!, in kotlin.Int!>!, /*2*/ p2: kotlin.Int, /*3*/ p3: java.util.function.IntBinaryOperator!): kotlin.Int
+    public open override /*1*/ /*fake_override*/ fun reduceToLong(/*0*/ p0: kotlin.Long, /*1*/ p1: java.util.function.ToLongBiFunction<in kotlin.String!, in kotlin.Int!>!, /*2*/ p2: kotlin.Long, /*3*/ p3: java.util.function.LongBinaryOperator!): kotlin.Long
+    public open override /*1*/ /*fake_override*/ fun reduceValues(/*0*/ p0: kotlin.Long, /*1*/ p1: java.util.function.BiFunction<in kotlin.Int!, in kotlin.Int!, out kotlin.Int!>!): kotlin.Int!
+    public open override /*1*/ /*fake_override*/ fun </*0*/ U : kotlin.Any!> reduceValues(/*0*/ p0: kotlin.Long, /*1*/ p1: java.util.function.Function<in kotlin.Int!, out U!>!, /*2*/ p2: java.util.function.BiFunction<in U!, in U!, out U!>!): U!
+    public open override /*1*/ /*fake_override*/ fun reduceValuesToDouble(/*0*/ p0: kotlin.Long, /*1*/ p1: java.util.function.ToDoubleFunction<in kotlin.Int!>!, /*2*/ p2: kotlin.Double, /*3*/ p3: java.util.function.DoubleBinaryOperator!): kotlin.Double
+    public open override /*1*/ /*fake_override*/ fun reduceValuesToInt(/*0*/ p0: kotlin.Long, /*1*/ p1: java.util.function.ToIntFunction<in kotlin.Int!>!, /*2*/ p2: kotlin.Int, /*3*/ p3: java.util.function.IntBinaryOperator!): kotlin.Int
+    public open override /*1*/ /*fake_override*/ fun reduceValuesToLong(/*0*/ p0: kotlin.Long, /*1*/ p1: java.util.function.ToLongFunction<in kotlin.Int!>!, /*2*/ p2: kotlin.Long, /*3*/ p3: java.util.function.LongBinaryOperator!): kotlin.Long
+    public open override /*1*/ /*fake_override*/ fun remove(/*0*/ key: kotlin.String): kotlin.Int?
+    public open override /*1*/ /*fake_override*/ fun remove(/*0*/ key: kotlin.String, /*1*/ value: kotlin.Int): kotlin.Boolean
+    public open override /*1*/ /*fake_override*/ fun replace(/*0*/ p0: kotlin.String, /*1*/ p1: kotlin.Int): kotlin.Int?
+    public open override /*1*/ /*fake_override*/ fun replace(/*0*/ p0: kotlin.String, /*1*/ p1: kotlin.Int, /*2*/ p2: kotlin.Int): kotlin.Boolean
+    public open override /*1*/ /*fake_override*/ fun replaceAll(/*0*/ p0: java.util.function.BiFunction<in kotlin.String, in kotlin.Int, out kotlin.Int>): kotlin.Unit
+    invisible_fake final override /*1*/ /*fake_override*/ fun replaceNode(/*0*/ p0: kotlin.Any!, /*1*/ p1: kotlin.Int!, /*2*/ p2: kotlin.Any!): kotlin.Int!
+    public open override /*1*/ /*fake_override*/ fun </*0*/ U : kotlin.Any!> search(/*0*/ p0: kotlin.Long, /*1*/ p1: java.util.function.BiFunction<in kotlin.String!, in kotlin.Int!, out U!>!): U!
+    public open override /*1*/ /*fake_override*/ fun </*0*/ U : kotlin.Any!> searchEntries(/*0*/ p0: kotlin.Long, /*1*/ p1: java.util.function.Function<kotlin.collections.(Mutable)Map.(Mutable)Entry<kotlin.String!, kotlin.Int!>!, out U!>!): U!
+    public open override /*1*/ /*fake_override*/ fun </*0*/ U : kotlin.Any!> searchKeys(/*0*/ p0: kotlin.Long, /*1*/ p1: java.util.function.Function<in kotlin.String!, out U!>!): U!
+    public open override /*1*/ /*fake_override*/ fun </*0*/ U : kotlin.Any!> searchValues(/*0*/ p0: kotlin.Long, /*1*/ p1: java.util.function.Function<in kotlin.Int!, out U!>!): U!
+    invisible_fake final override /*1*/ /*fake_override*/ fun sumCount(): kotlin.Long
+    public open override /*1*/ /*fake_override*/ fun toString(): kotlin.String
+    invisible_fake final override /*1*/ /*fake_override*/ fun transfer(/*0*/ p0: kotlin.Array<(out) java.util.concurrent.ConcurrentHashMap.Node<kotlin.String!, kotlin.Int!>!>!, /*1*/ p1: kotlin.Array<(out) java.util.concurrent.ConcurrentHashMap.Node<kotlin.String!, kotlin.Int!>!>!): kotlin.Unit
+    invisible_fake final override /*1*/ /*fake_override*/ fun treeifyBin(/*0*/ p0: kotlin.Array<(out) java.util.concurrent.ConcurrentHashMap.Node<kotlin.String!, kotlin.Int!>!>!, /*1*/ p1: kotlin.Int): kotlin.Unit
+    invisible_fake final override /*1*/ /*fake_override*/ fun tryPresize(/*0*/ p0: kotlin.Int): kotlin.Unit
+    invisible_fake open override /*1*/ /*fake_override*/ fun writeObject(/*0*/ p0: java.io.ObjectOutputStream!): kotlin.Unit
+}
diff --git a/compiler/tests/org/jetbrains/kotlin/checkers/DiagnosticsTestWithStdLibGenerated.java b/compiler/tests/org/jetbrains/kotlin/checkers/DiagnosticsTestWithStdLibGenerated.java
index 0be80022dfe..bb0d0611dc8 100644
--- a/compiler/tests/org/jetbrains/kotlin/checkers/DiagnosticsTestWithStdLibGenerated.java
+++ b/compiler/tests/org/jetbrains/kotlin/checkers/DiagnosticsTestWithStdLibGenerated.java
@@ -2705,6 +2705,16 @@ public class DiagnosticsTestWithStdLibGenerated extends AbstractDiagnosticsTestW
             KotlinTestUtils.assertAllTestsPresentByMetadata(this.getClass(), new File("compiler/testData/diagnostics/testsWithStdLib/java"), Pattern.compile("^(.+)\\.kt$"), TargetBackend.ANY, true);
         }
 
+        @TestMetadata("concurrentHashMapContains.kt")
+        public void testConcurrentHashMapContains() throws Exception {
+            runTest("compiler/testData/diagnostics/testsWithStdLib/java/concurrentHashMapContains.kt");
+        }
+
+        @TestMetadata("concurrentHashMapContainsError.kt")
+        public void testConcurrentHashMapContainsError() throws Exception {
+            runTest("compiler/testData/diagnostics/testsWithStdLib/java/concurrentHashMapContainsError.kt");
+        }
+
         @TestMetadata("functionN.kt")
         public void testFunctionN() throws Exception {
             runTest("compiler/testData/diagnostics/testsWithStdLib/java/functionN.kt");
diff --git a/compiler/tests/org/jetbrains/kotlin/checkers/javac/DiagnosticsTestWithStdLibUsingJavacGenerated.java b/compiler/tests/org/jetbrains/kotlin/checkers/javac/DiagnosticsTestWithStdLibUsingJavacGenerated.java
index 836e8c1930c..2f4f7d582c8 100644
--- a/compiler/tests/org/jetbrains/kotlin/checkers/javac/DiagnosticsTestWithStdLibUsingJavacGenerated.java
+++ b/compiler/tests/org/jetbrains/kotlin/checkers/javac/DiagnosticsTestWithStdLibUsingJavacGenerated.java
@@ -2705,6 +2705,16 @@ public class DiagnosticsTestWithStdLibUsingJavacGenerated extends AbstractDiagno
             KotlinTestUtils.assertAllTestsPresentByMetadata(this.getClass(), new File("compiler/testData/diagnostics/testsWithStdLib/java"), Pattern.compile("^(.+)\\.kt$"), TargetBackend.ANY, true);
         }
 
+        @TestMetadata("concurrentHashMapContains.kt")
+        public void testConcurrentHashMapContains() throws Exception {
+            runTest("compiler/testData/diagnostics/testsWithStdLib/java/concurrentHashMapContains.kt");
+        }
+
+        @TestMetadata("concurrentHashMapContainsError.kt")
+        public void testConcurrentHashMapContainsError() throws Exception {
+            runTest("compiler/testData/diagnostics/testsWithStdLib/java/concurrentHashMapContainsError.kt");
+        }
+
         @TestMetadata("functionN.kt")
         public void testFunctionN() throws Exception {
             runTest("compiler/testData/diagnostics/testsWithStdLib/java/functionN.kt");
diff --git a/compiler/util/src/org/jetbrains/kotlin/config/LanguageVersionSettings.kt b/compiler/util/src/org/jetbrains/kotlin/config/LanguageVersionSettings.kt
index f749257257c..d6f2af6ac57 100644
--- a/compiler/util/src/org/jetbrains/kotlin/config/LanguageVersionSettings.kt
+++ b/compiler/util/src/org/jetbrains/kotlin/config/LanguageVersionSettings.kt
@@ -93,6 +93,7 @@ enum class LanguageFeature(
     NoConstantValueAttributeForNonConstVals(KOTLIN_1_4, kind = BUG_FIX),
     WarningOnMainUnusedParameter(KOTLIN_1_4),
     PolymorphicSignature(KOTLIN_1_4),
+    ProhibitConcurrentHashMapContains(KOTLIN_1_4, kind = BUG_FIX),
 
     ProperVisibilityForCompanionObjectInstanceField(sinceVersion = null, kind = BUG_FIX),
     // Temporarily disabled, see KT-27084/KT-22379
diff --git a/idea/idea-analysis/src/org/jetbrains/kotlin/idea/highlighter/IdeErrorMessages.java b/idea/idea-analysis/src/org/jetbrains/kotlin/idea/highlighter/IdeErrorMessages.java
index cb62b3d0a5d..312a9b4b330 100644
--- a/idea/idea-analysis/src/org/jetbrains/kotlin/idea/highlighter/IdeErrorMessages.java
+++ b/idea/idea-analysis/src/org/jetbrains/kotlin/idea/highlighter/IdeErrorMessages.java
@@ -35,6 +35,8 @@ import static org.jetbrains.kotlin.idea.highlighter.IdeRenderers.*;
 import static org.jetbrains.kotlin.resolve.jvm.diagnostics.ErrorsJvm.ACCIDENTAL_OVERRIDE;
 import static org.jetbrains.kotlin.resolve.jvm.diagnostics.ErrorsJvm.CONFLICTING_JVM_DECLARATIONS;
 import static org.jetbrains.kotlin.resolve.jvm.diagnostics.ErrorsJvm.NULLABILITY_MISMATCH_BASED_ON_JAVA_ANNOTATIONS;
+import static org.jetbrains.kotlin.resolve.jvm.diagnostics.ErrorsJvm.CONCURRENT_HASH_MAP_CONTAINS_OPERATOR;
+import static org.jetbrains.kotlin.resolve.jvm.diagnostics.ErrorsJvm.CONCURRENT_HASH_MAP_CONTAINS_OPERATOR_ERROR;
 
 
 /**
@@ -187,6 +189,13 @@ public class IdeErrorMessages {
         MAP.put(NO_ACTUAL_CLASS_MEMBER_FOR_EXPECTED_CLASS, "<html>Actual class ''{0}'' has no corresponding members for expected class members:{1}</html>",
                 NAME, new IncompatibleExpectedActualClassScopesRenderer(IdeMultiplatformDiagnosticRenderingMode.INSTANCE));
 
+        String MESSAGE_FOR_CONCURRENT_HASH_MAP_CONTAINS =
+                "<html>Method 'contains' from ConcurrentHashMap may have unexpected semantics: it calls 'containsValue' instead of 'containsKey'.<br/>" +
+                "Use explicit form of the call to 'containsKey'/'containsValue'/'contains' or cast the value to kotlin.collections.Map instead.<br/>" +
+                "See https://youtrack.jetbrains.com/issue/KT-18053 for more details</html>";
+        MAP.put(CONCURRENT_HASH_MAP_CONTAINS_OPERATOR, MESSAGE_FOR_CONCURRENT_HASH_MAP_CONTAINS);
+        MAP.put(CONCURRENT_HASH_MAP_CONTAINS_OPERATOR_ERROR, MESSAGE_FOR_CONCURRENT_HASH_MAP_CONTAINS);
+
         MAP.setImmutable();
     }