Show warnings for Java methods with external annotations when they called from Kotlin code

idea/testData/externalAnnotations/ClassWithExternalAnnotatedMembers.java

@@ -0,0 +1,14 @@
+public class ClassWithExternalAnnotatedMembers {
+    String nullableMethod() {
+        return null;
+    }
+
+    String notNullMethod() {
+        return "nya";
+    }
+
+    void methodWithNotNullParameter(Integer x) {
+    }
+
+    String nullableField = "nya";
+}

idea/testData/externalAnnotations/annotations/annotations.xml

@@ -0,0 +1,14 @@
+<root>
+    <item name='ClassWithExternalAnnotatedMembers java.lang.String notNullMethod()'>
+        <annotation name='org.jetbrains.annotations.NotNull'/>
+    </item>
+    <item name='ClassWithExternalAnnotatedMembers java.lang.String nullableMethod()'>
+        <annotation name='org.jetbrains.annotations.Nullable'/>
+    </item>
+    <item name='ClassWithExternalAnnotatedMembers nullableField'>
+        <annotation name='org.jetbrains.annotations.Nullable'/>
+    </item>
+    <item name='ClassWithExternalAnnotatedMembers void methodWithNotNullParameter(java.lang.Integer) 0'>
+        <annotation name='org.jetbrains.annotations.NotNull'/>
+    </item>
+</root>

idea/testData/externalAnnotations/notNullMethod.kt

@@ -0,0 +1,4 @@
+fun test() {
+    val x = ClassWithExternalAnnotatedMembers()
+    x.notNullMethod()<warning descr="[UNNECESSARY_SAFE_CALL] Unnecessary safe call on a non-null receiver of type String!">?.</warning>toLowerCase()
+}

idea/testData/externalAnnotations/nullableField.kt

@@ -0,0 +1,5 @@
+@Suppress("UNUSED_VARIABLE")
+fun test() {
+    val x = ClassWithExternalAnnotatedMembers()
+    val y: String = <warning descr="[NULLABILITY_MISMATCH_BASED_ON_JAVA_ANNOTATIONS] Type mismatch: inferred type is String? but String was expected">x.nullableField</warning>
+}

idea/testData/externalAnnotations/nullableMethod.kt

@@ -0,0 +1,5 @@
+@Suppress("UNUSED_VARIABLE")
+fun test() {
+    val x = ClassWithExternalAnnotatedMembers()
+    val y: String = <warning descr="[NULLABILITY_MISMATCH_BASED_ON_JAVA_ANNOTATIONS] Type mismatch: inferred type is String? but String was expected">x.nullableMethod()</warning>
+}

idea/testData/externalAnnotations/nullableMethodParameter.kt

@@ -0,0 +1,4 @@
+fun test() {
+    val x = ClassWithExternalAnnotatedMembers()
+    x.methodWithNotNullParameter(<warning descr="[NULLABILITY_MISMATCH_BASED_ON_JAVA_ANNOTATIONS] Type mismatch: inferred type is Nothing? but Int was expected">null</warning>)
+}