FIR Java: record Java types with flexible nullability

compiler/testData/loadJava/compiledJava/kotlinSignature/AllBoundsInWhen.fir.txt

@@ -1,5 +1,5 @@
 public open class AllBoundsInWhen : R|kotlin/Any| {
-    public open fun <T : R|ft<java/io/Serializable, java/io/Serializable?>!|> foo(): R|kotlin/Unit|
+    public open fun <T : R|ft<@FlexibleNullability java/io/Serializable, java/io/Serializable?>!|> foo(): R|kotlin/Unit|
 
     public constructor(): R|test/AllBoundsInWhen|
 

compiler/testData/loadJava/compiledJava/kotlinSignature/ArrayType.fir.txt

@@ -1,5 +1,5 @@
 public open class ArrayType : R|kotlin/Any| {
-    public open fun foo(): R|ft<kotlin/Array<ft<kotlin/String, kotlin/String?>!>, kotlin/Array<out ft<kotlin/String, kotlin/String?>!>?>!|
+    public open fun foo(): R|ft<@FlexibleNullability kotlin/Array<ft<@FlexibleNullability kotlin/String, kotlin/String?>!>, kotlin/Array<out ft<@FlexibleNullability kotlin/String, kotlin/String?>!>?>!|
 
     public constructor(): R|test/ArrayType|
 

compiler/testData/loadJava/compiledJava/kotlinSignature/ConstructorWithNewTypeParams.fir.txt

@@ -1,4 +1,4 @@
 public open class ConstructorWithNewTypeParams<T : R|ft<kotlin/Any, kotlin/Any?>!|> : R|kotlin/Any| {
-    public constructor<T : R|ft<kotlin/Any, kotlin/Any?>!|, U : R|ft<kotlin/Any, kotlin/Any?>!|>(first: R|ft<U, U?>!|): R|test/ConstructorWithNewTypeParams<T>|
+    public constructor<T : R|ft<kotlin/Any, kotlin/Any?>!|, U : R|ft<kotlin/Any, kotlin/Any?>!|>(first: R|ft<@FlexibleNullability U, U?>!|): R|test/ConstructorWithNewTypeParams<T>|
 
 }

compiler/testData/loadJava/compiledJava/kotlinSignature/ConstructorWithParentTypeParams.fir.txt

@@ -1,4 +1,4 @@
 public open class ConstructorWithParentTypeParams<T : R|ft<kotlin/Any, kotlin/Any?>!|> : R|kotlin/Any| {
-    public constructor<T : R|ft<kotlin/Any, kotlin/Any?>!|>(first: R|ft<T, T?>!|): R|test/ConstructorWithParentTypeParams<T>|
+    public constructor<T : R|ft<kotlin/Any, kotlin/Any?>!|>(first: R|ft<@FlexibleNullability T, T?>!|): R|test/ConstructorWithParentTypeParams<T>|
 
 }

compiler/testData/loadJava/compiledJava/kotlinSignature/ConstructorWithSeveralParams.fir.txt

@@ -1,4 +1,4 @@
 public open class ConstructorWithSeveralParams : R|kotlin/Any| {
-    public constructor(integer: R|ft<kotlin/Int, kotlin/Int?>!|, intBasic: R|kotlin/Int|, collection: R|ft<java/util/ArrayList<ft<kotlin/String, kotlin/String?>!>, java/util/ArrayList<ft<kotlin/String, kotlin/String?>!>?>!|): R|test/ConstructorWithSeveralParams|
+    public constructor(integer: R|ft<@FlexibleNullability kotlin/Int, kotlin/Int?>!|, intBasic: R|kotlin/Int|, collection: R|ft<@FlexibleNullability java/util/ArrayList<ft<@FlexibleNullability kotlin/String, kotlin/String?>!>, java/util/ArrayList<ft<@FlexibleNullability kotlin/String, kotlin/String?>!>?>!|): R|test/ConstructorWithSeveralParams|
 
 }

compiler/testData/loadJava/compiledJava/kotlinSignature/CustomProjectionKind.fir.txt

@@ -1,5 +1,5 @@
 public open class CustomProjectionKind : R|kotlin/Any| {
-    public open fun foo(): R|ft<kotlin/collections/MutableList<ft<kotlin/Number, kotlin/Number?>!>, kotlin/collections/List<ft<kotlin/Number, kotlin/Number?>!>?>!|
+    public open fun foo(): R|ft<@FlexibleNullability kotlin/collections/MutableList<ft<@FlexibleNullability kotlin/Number, kotlin/Number?>!>, kotlin/collections/List<ft<@FlexibleNullability kotlin/Number, kotlin/Number?>!>?>!|
 
     public constructor(): R|test/CustomProjectionKind|
 

compiler/testData/loadJava/compiledJava/kotlinSignature/MethodWithFunctionTypes.fir.txt

@@ -1,5 +1,5 @@
 public open class MethodWithFunctionTypes : R|kotlin/Any| {
-    public open fun foo(f: R|ft<kotlin/Function1<ft<kotlin/String, kotlin/String?>!, ft<kotlin/String, kotlin/String?>!>, kotlin/Function1<ft<kotlin/String, kotlin/String?>!, ft<kotlin/String, kotlin/String?>!>?>!|): R|ft<kotlin/Function0<ft<kotlin/String, kotlin/String?>!>, kotlin/Function0<ft<kotlin/String, kotlin/String?>!>?>!|
+    public open fun foo(f: R|ft<@FlexibleNullability kotlin/Function1<ft<@FlexibleNullability kotlin/String, kotlin/String?>!, ft<@FlexibleNullability kotlin/String, kotlin/String?>!>, kotlin/Function1<ft<@FlexibleNullability kotlin/String, kotlin/String?>!, ft<@FlexibleNullability kotlin/String, kotlin/String?>!>?>!|): R|ft<@FlexibleNullability kotlin/Function0<ft<@FlexibleNullability kotlin/String, kotlin/String?>!>, kotlin/Function0<ft<@FlexibleNullability kotlin/String, kotlin/String?>!>?>!|
 
     public constructor(): R|test/MethodWithFunctionTypes|
 

compiler/testData/loadJava/compiledJava/kotlinSignature/MethodWithGenerics.fir.txt

@@ -1,5 +1,5 @@
 public open class MethodWithGenerics : R|kotlin/Any| {
-    public open fun foo(a: R|ft<kotlin/String, kotlin/String?>!|, b: R|ft<kotlin/collections/MutableList<ft<kotlin/collections/MutableMap.MutableEntry<ft<kotlin/String, kotlin/String?>!, ft<kotlin/String, kotlin/String?>!>, kotlin/collections/Map.Entry<ft<kotlin/String, kotlin/String?>!, ft<kotlin/String, kotlin/String?>!>?>!>, kotlin/collections/List<ft<kotlin/collections/MutableMap.MutableEntry<ft<kotlin/String, kotlin/String?>!, ft<kotlin/String, kotlin/String?>!>, kotlin/collections/Map.Entry<ft<kotlin/String, kotlin/String?>!, ft<kotlin/String, kotlin/String?>!>?>!>?>!|): R|ft<kotlin/String, kotlin/String?>!|
+    public open fun foo(a: R|ft<@FlexibleNullability kotlin/String, kotlin/String?>!|, b: R|ft<@FlexibleNullability kotlin/collections/MutableList<ft<@FlexibleNullability kotlin/collections/MutableMap.MutableEntry<ft<@FlexibleNullability kotlin/String, kotlin/String?>!, ft<@FlexibleNullability kotlin/String, kotlin/String?>!>, kotlin/collections/Map.Entry<ft<@FlexibleNullability kotlin/String, kotlin/String?>!, ft<@FlexibleNullability kotlin/String, kotlin/String?>!>?>!>, kotlin/collections/List<ft<@FlexibleNullability kotlin/collections/MutableMap.MutableEntry<ft<@FlexibleNullability kotlin/String, kotlin/String?>!, ft<@FlexibleNullability kotlin/String, kotlin/String?>!>, kotlin/collections/Map.Entry<ft<@FlexibleNullability kotlin/String, kotlin/String?>!, ft<@FlexibleNullability kotlin/String, kotlin/String?>!>?>!>?>!|): R|ft<@FlexibleNullability kotlin/String, kotlin/String?>!|
 
     public constructor(): R|test/MethodWithGenerics|
 

compiler/testData/loadJava/compiledJava/kotlinSignature/MethodWithMappedClasses.fir.txt

@@ -1,7 +1,7 @@
 public open class MethodWithMappedClasses : R|kotlin/Any| {
-    public open fun <T : R|ft<kotlin/Any, kotlin/Any?>!|> copy(dest: R|ft<kotlin/collections/MutableList<in ft<T, T?>!>, kotlin/collections/List<*>?>!|, src: R|ft<kotlin/collections/MutableList<ft<T, T?>!>, kotlin/collections/List<ft<T, T?>!>?>!|): R|kotlin/Unit|
+    public open fun <T : R|ft<kotlin/Any, kotlin/Any?>!|> copy(dest: R|ft<@FlexibleNullability kotlin/collections/MutableList<in ft<@FlexibleNullability T, T?>!>, kotlin/collections/List<*>?>!|, src: R|ft<@FlexibleNullability kotlin/collections/MutableList<ft<@FlexibleNullability T, T?>!>, kotlin/collections/List<ft<@FlexibleNullability T, T?>!>?>!|): R|kotlin/Unit|
 
-    public open fun <T : R|ft<kotlin/Any, kotlin/Any?>!|> copyMap(dest: R|ft<kotlin/collections/MutableMap<ft<kotlin/String, kotlin/String?>!, in ft<T, T?>!>, kotlin/collections/Map<ft<kotlin/String, kotlin/String?>!, *>?>!|, src: R|ft<kotlin/collections/MutableMap<ft<kotlin/String, kotlin/String?>!, ft<T, T?>!>, kotlin/collections/Map<ft<kotlin/String, kotlin/String?>!, ft<T, T?>!>?>!|): R|kotlin/Unit|
+    public open fun <T : R|ft<kotlin/Any, kotlin/Any?>!|> copyMap(dest: R|ft<@FlexibleNullability kotlin/collections/MutableMap<ft<@FlexibleNullability kotlin/String, kotlin/String?>!, in ft<@FlexibleNullability T, T?>!>, kotlin/collections/Map<ft<@FlexibleNullability kotlin/String, kotlin/String?>!, *>?>!|, src: R|ft<@FlexibleNullability kotlin/collections/MutableMap<ft<@FlexibleNullability kotlin/String, kotlin/String?>!, ft<@FlexibleNullability T, T?>!>, kotlin/collections/Map<ft<@FlexibleNullability kotlin/String, kotlin/String?>!, ft<@FlexibleNullability T, T?>!>?>!|): R|kotlin/Unit|
 
     public constructor(): R|test/MethodWithMappedClasses|
 

compiler/testData/loadJava/compiledJava/kotlinSignature/MethodWithTypeParameters.fir.txt

@@ -1,5 +1,5 @@
 public open class MethodWithTypeParameters : R|kotlin/Any| {
-    public open fun <A : R|ft<kotlin/Any, kotlin/Any?>!|, B : R|ft<java/lang/Runnable, java/lang/Runnable?>!|, R|ft<kotlin/collections/MutableList<ft<kotlin/Cloneable, kotlin/Cloneable?>!>, kotlin/collections/List<ft<kotlin/Cloneable, kotlin/Cloneable?>!>?>!|> foo(a: R|ft<A, A?>!|, b: R|ft<kotlin/collections/MutableList<out ft<B, B?>!>, kotlin/collections/List<out ft<B, B?>!>?>!|, list: R|ft<kotlin/collections/MutableList<in ft<kotlin/String, kotlin/String?>!>, kotlin/collections/List<*>?>!|): R|kotlin/Unit|
+    public open fun <A : R|ft<kotlin/Any, kotlin/Any?>!|, B : R|ft<@FlexibleNullability java/lang/Runnable, java/lang/Runnable?>!|, R|ft<@FlexibleNullability kotlin/collections/MutableList<ft<@FlexibleNullability kotlin/Cloneable, kotlin/Cloneable?>!>, kotlin/collections/List<ft<@FlexibleNullability kotlin/Cloneable, kotlin/Cloneable?>!>?>!|> foo(a: R|ft<@FlexibleNullability A, A?>!|, b: R|ft<@FlexibleNullability kotlin/collections/MutableList<out ft<@FlexibleNullability B, B?>!>, kotlin/collections/List<out ft<@FlexibleNullability B, B?>!>?>!|, list: R|ft<@FlexibleNullability kotlin/collections/MutableList<in ft<@FlexibleNullability kotlin/String, kotlin/String?>!>, kotlin/collections/List<*>?>!|): R|kotlin/Unit|
 
     public constructor(): R|test/MethodWithTypeParameters|
 

compiler/testData/loadJava/compiledJava/kotlinSignature/MethodWithVararg.fir.txt

@@ -1,5 +1,5 @@
 public open class MethodWithVararg : R|kotlin/Any| {
-    public open fun foo(vararg s: R|ft<kotlin/Array<ft<kotlin/String, kotlin/String?>!>, kotlin/Array<out ft<kotlin/String, kotlin/String?>!>?>!|): R|kotlin/Unit|
+    public open fun foo(vararg s: R|ft<@FlexibleNullability kotlin/Array<ft<@FlexibleNullability kotlin/String, kotlin/String?>!>, kotlin/Array<out ft<@FlexibleNullability kotlin/String, kotlin/String?>!>?>!|): R|kotlin/Unit|
 
     public constructor(): R|test/MethodWithVararg|
 

compiler/testData/loadJava/compiledJava/kotlinSignature/PropertyArrayTypes.fir.txt

@@ -1,9 +1,9 @@
 public open class PropertyArrayTypes<T : R|ft<kotlin/Any, kotlin/Any?>!|> : R|kotlin/Any| {
-    public open field arrayOfArrays: R|ft<kotlin/Array<ft<kotlin/Array<ft<kotlin/String, kotlin/String?>!>, kotlin/Array<out ft<kotlin/String, kotlin/String?>!>?>!>, kotlin/Array<out ft<kotlin/Array<ft<kotlin/String, kotlin/String?>!>, kotlin/Array<out ft<kotlin/String, kotlin/String?>!>?>!>?>!|
+    public open field arrayOfArrays: R|ft<@FlexibleNullability kotlin/Array<ft<@FlexibleNullability kotlin/Array<ft<@FlexibleNullability kotlin/String, kotlin/String?>!>, kotlin/Array<out ft<@FlexibleNullability kotlin/String, kotlin/String?>!>?>!>, kotlin/Array<out ft<@FlexibleNullability kotlin/Array<ft<@FlexibleNullability kotlin/String, kotlin/String?>!>, kotlin/Array<out ft<@FlexibleNullability kotlin/String, kotlin/String?>!>?>!>?>!|
 
-    public open field array: R|ft<kotlin/Array<ft<kotlin/String, kotlin/String?>!>, kotlin/Array<out ft<kotlin/String, kotlin/String?>!>?>!|
+    public open field array: R|ft<@FlexibleNullability kotlin/Array<ft<@FlexibleNullability kotlin/String, kotlin/String?>!>, kotlin/Array<out ft<@FlexibleNullability kotlin/String, kotlin/String?>!>?>!|
 
-    public open field genericArray: R|ft<kotlin/Array<ft<T, T?>!>, kotlin/Array<out ft<T, T?>!>?>!|
+    public open field genericArray: R|ft<@FlexibleNullability kotlin/Array<ft<@FlexibleNullability T, T?>!>, kotlin/Array<out ft<@FlexibleNullability T, T?>!>?>!|
 
     public constructor<T : R|ft<kotlin/Any, kotlin/Any?>!|>(): R|test/PropertyArrayTypes<T>|
 

compiler/testData/loadJava/compiledJava/kotlinSignature/PropertyComplexTypes.fir.txt

@@ -1,11 +1,11 @@
 public open class PropertyComplexTypes<T : R|ft<kotlin/Any, kotlin/Any?>!|> : R|kotlin/Any| {
-    public open field genericType: R|ft<T, T?>!|
+    public open field genericType: R|ft<@FlexibleNullability T, T?>!|
 
-    public open field listDefinedGeneric: R|ft<java/util/ArrayList<ft<kotlin/String, kotlin/String?>!>, java/util/ArrayList<ft<kotlin/String, kotlin/String?>!>?>!|
+    public open field listDefinedGeneric: R|ft<@FlexibleNullability java/util/ArrayList<ft<@FlexibleNullability kotlin/String, kotlin/String?>!>, java/util/ArrayList<ft<@FlexibleNullability kotlin/String, kotlin/String?>!>?>!|
 
-    public open field listGeneric: R|ft<java/util/ArrayList<ft<T, T?>!>, java/util/ArrayList<ft<T, T?>!>?>!|
+    public open field listGeneric: R|ft<@FlexibleNullability java/util/ArrayList<ft<@FlexibleNullability T, T?>!>, java/util/ArrayList<ft<@FlexibleNullability T, T?>!>?>!|
 
-    public open field listOfGenericList: R|ft<java/util/ArrayList<ft<java/util/ArrayList<ft<T, T?>!>, java/util/ArrayList<ft<T, T?>!>?>!>, java/util/ArrayList<ft<java/util/ArrayList<ft<T, T?>!>, java/util/ArrayList<ft<T, T?>!>?>!>?>!|
+    public open field listOfGenericList: R|ft<@FlexibleNullability java/util/ArrayList<ft<@FlexibleNullability java/util/ArrayList<ft<@FlexibleNullability T, T?>!>, java/util/ArrayList<ft<@FlexibleNullability T, T?>!>?>!>, java/util/ArrayList<ft<@FlexibleNullability java/util/ArrayList<ft<@FlexibleNullability T, T?>!>, java/util/ArrayList<ft<@FlexibleNullability T, T?>!>?>!>?>!|
 
     public constructor<T : R|ft<kotlin/Any, kotlin/Any?>!|>(): R|test/PropertyComplexTypes<T>|
 

compiler/testData/loadJava/compiledJava/kotlinSignature/PropertySimpleType.fir.txt

@@ -1,7 +1,7 @@
 public open class PropertySimpleType : R|kotlin/Any| {
-    public open field fieldOne: R|ft<kotlin/String, kotlin/String?>!|
+    public open field fieldOne: R|ft<@FlexibleNullability kotlin/String, kotlin/String?>!|
 
-    public open field fieldTwo: R|ft<kotlin/String, kotlin/String?>!|
+    public open field fieldTwo: R|ft<@FlexibleNullability kotlin/String, kotlin/String?>!|
 
     public constructor(): R|test/PropertySimpleType|
 

compiler/testData/loadJava/compiledJava/kotlinSignature/StarProjection.fir.txt

@@ -1,5 +1,5 @@
 public final class StarProjection : R|kotlin/Any| {
-    public final fun foo(): R|ft<test/StarProjection.MyClass<*>, test/StarProjection.MyClass<*>?>!|
+    public final fun foo(): R|ft<@FlexibleNullability test/StarProjection.MyClass<*>, test/StarProjection.MyClass<*>?>!|
 
     public constructor(): R|test/StarProjection|
 

compiler/testData/loadJava/compiledJava/kotlinSignature/error/WrongProjectionKind.fir.txt

@@ -1,5 +1,5 @@
 public open class WrongProjectionKind : R|kotlin/Any| {
-    public open fun copy(from: R|ft<kotlin/Array<ft<kotlin/Number, kotlin/Number?>!>, kotlin/Array<out ft<kotlin/Number, kotlin/Number?>!>?>!|, to: R|ft<kotlin/Array<ft<kotlin/Number, kotlin/Number?>!>, kotlin/Array<out ft<kotlin/Number, kotlin/Number?>!>?>!|): R|ft<kotlin/collections/MutableList<ft<kotlin/Number, kotlin/Number?>!>, kotlin/collections/List<ft<kotlin/Number, kotlin/Number?>!>?>!|
+    public open fun copy(from: R|ft<@FlexibleNullability kotlin/Array<ft<@FlexibleNullability kotlin/Number, kotlin/Number?>!>, kotlin/Array<out ft<@FlexibleNullability kotlin/Number, kotlin/Number?>!>?>!|, to: R|ft<@FlexibleNullability kotlin/Array<ft<@FlexibleNullability kotlin/Number, kotlin/Number?>!>, kotlin/Array<out ft<@FlexibleNullability kotlin/Number, kotlin/Number?>!>?>!|): R|ft<@FlexibleNullability kotlin/collections/MutableList<ft<@FlexibleNullability kotlin/Number, kotlin/Number?>!>, kotlin/collections/List<ft<@FlexibleNullability kotlin/Number, kotlin/Number?>!>?>!|
 
     public constructor(): R|test/WrongProjectionKind|
 

compiler/testData/loadJava/compiledJava/kotlinSignature/error/WrongReturnTypeStructure.fir.txt

@@ -1,5 +1,5 @@
 public open class WrongReturnTypeStructure : R|kotlin/Any| {
-    public open fun foo(a: R|ft<kotlin/String, kotlin/String?>!|, b: R|ft<kotlin/collections/MutableList<ft<kotlin/collections/MutableMap.MutableEntry<ft<kotlin/String, kotlin/String?>!, ft<kotlin/String, kotlin/String?>!>, kotlin/collections/Map.Entry<ft<kotlin/String, kotlin/String?>!, ft<kotlin/String, kotlin/String?>!>?>!>, kotlin/collections/List<ft<kotlin/collections/MutableMap.MutableEntry<ft<kotlin/String, kotlin/String?>!, ft<kotlin/String, kotlin/String?>!>, kotlin/collections/Map.Entry<ft<kotlin/String, kotlin/String?>!, ft<kotlin/String, kotlin/String?>!>?>!>?>!|): R|ft<kotlin/String, kotlin/String?>!|
+    public open fun foo(a: R|ft<@FlexibleNullability kotlin/String, kotlin/String?>!|, b: R|ft<@FlexibleNullability kotlin/collections/MutableList<ft<@FlexibleNullability kotlin/collections/MutableMap.MutableEntry<ft<@FlexibleNullability kotlin/String, kotlin/String?>!, ft<@FlexibleNullability kotlin/String, kotlin/String?>!>, kotlin/collections/Map.Entry<ft<@FlexibleNullability kotlin/String, kotlin/String?>!, ft<@FlexibleNullability kotlin/String, kotlin/String?>!>?>!>, kotlin/collections/List<ft<@FlexibleNullability kotlin/collections/MutableMap.MutableEntry<ft<@FlexibleNullability kotlin/String, kotlin/String?>!, ft<@FlexibleNullability kotlin/String, kotlin/String?>!>, kotlin/collections/Map.Entry<ft<@FlexibleNullability kotlin/String, kotlin/String?>!, ft<@FlexibleNullability kotlin/String, kotlin/String?>!>?>!>?>!|): R|ft<@FlexibleNullability kotlin/String, kotlin/String?>!|
 
     public constructor(): R|test/WrongReturnTypeStructure|
 

compiler/testData/loadJava/compiledJava/kotlinSignature/error/WrongTypeParameterBoundStructure1.fir.txt

@@ -1,5 +1,5 @@
 public open class WrongTypeParameterBoundStructure1 : R|kotlin/Any| {
-    public open fun <A : R|ft<kotlin/Any, kotlin/Any?>!|, B : R|ft<java/lang/Runnable, java/lang/Runnable?>!|, R|ft<kotlin/collections/MutableList<ft<kotlin/Cloneable, kotlin/Cloneable?>!>, kotlin/collections/List<ft<kotlin/Cloneable, kotlin/Cloneable?>!>?>!|> foo(a: R|ft<A, A?>!|, b: R|ft<kotlin/collections/MutableList<out ft<B, B?>!>, kotlin/collections/List<out ft<B, B?>!>?>!|): R|kotlin/Unit|
+    public open fun <A : R|ft<kotlin/Any, kotlin/Any?>!|, B : R|ft<@FlexibleNullability java/lang/Runnable, java/lang/Runnable?>!|, R|ft<@FlexibleNullability kotlin/collections/MutableList<ft<@FlexibleNullability kotlin/Cloneable, kotlin/Cloneable?>!>, kotlin/collections/List<ft<@FlexibleNullability kotlin/Cloneable, kotlin/Cloneable?>!>?>!|> foo(a: R|ft<@FlexibleNullability A, A?>!|, b: R|ft<@FlexibleNullability kotlin/collections/MutableList<out ft<@FlexibleNullability B, B?>!>, kotlin/collections/List<out ft<@FlexibleNullability B, B?>!>?>!|): R|kotlin/Unit|
 
     public constructor(): R|test/WrongTypeParameterBoundStructure1|
 

compiler/testData/loadJava/compiledJava/kotlinSignature/error/WrongValueParameterStructure1.fir.txt

@@ -1,5 +1,5 @@
 public open class WrongValueParameterStructure1 : R|kotlin/Any| {
-    public open fun foo(a: R|ft<kotlin/String, kotlin/String?>!|, b: R|ft<kotlin/collections/MutableList<ft<kotlin/collections/MutableMap.MutableEntry<ft<kotlin/String, kotlin/String?>!, ft<kotlin/String, kotlin/String?>!>, kotlin/collections/Map.Entry<ft<kotlin/String, kotlin/String?>!, ft<kotlin/String, kotlin/String?>!>?>!>, kotlin/collections/List<ft<kotlin/collections/MutableMap.MutableEntry<ft<kotlin/String, kotlin/String?>!, ft<kotlin/String, kotlin/String?>!>, kotlin/collections/Map.Entry<ft<kotlin/String, kotlin/String?>!, ft<kotlin/String, kotlin/String?>!>?>!>?>!|): R|ft<kotlin/String, kotlin/String?>!|
+    public open fun foo(a: R|ft<@FlexibleNullability kotlin/String, kotlin/String?>!|, b: R|ft<@FlexibleNullability kotlin/collections/MutableList<ft<@FlexibleNullability kotlin/collections/MutableMap.MutableEntry<ft<@FlexibleNullability kotlin/String, kotlin/String?>!, ft<@FlexibleNullability kotlin/String, kotlin/String?>!>, kotlin/collections/Map.Entry<ft<@FlexibleNullability kotlin/String, kotlin/String?>!, ft<@FlexibleNullability kotlin/String, kotlin/String?>!>?>!>, kotlin/collections/List<ft<@FlexibleNullability kotlin/collections/MutableMap.MutableEntry<ft<@FlexibleNullability kotlin/String, kotlin/String?>!, ft<@FlexibleNullability kotlin/String, kotlin/String?>!>, kotlin/collections/Map.Entry<ft<@FlexibleNullability kotlin/String, kotlin/String?>!, ft<@FlexibleNullability kotlin/String, kotlin/String?>!>?>!>?>!|): R|ft<@FlexibleNullability kotlin/String, kotlin/String?>!|
 
     public constructor(): R|test/WrongValueParameterStructure1|
 

compiler/testData/loadJava/compiledJava/kotlinSignature/propagation/return/SubclassOfCollection.fir.txt

@@ -1,4 +1,4 @@
-public abstract interface SubclassOfCollection<E : R|ft<kotlin/Any, kotlin/Any?>!|> : R|kotlin/collections/MutableCollection<ft<E, E?>!>| {
-    public abstract operator fun iterator(): R|kotlin/collections/MutableIterator<ft<E, E?>!>|
+public abstract interface SubclassOfCollection<E : R|ft<kotlin/Any, kotlin/Any?>!|> : R|kotlin/collections/MutableCollection<ft<@FlexibleNullability E, E?>!>| {
+    public abstract operator fun iterator(): R|@FlexibleNullability kotlin/collections/MutableIterator<ft<@FlexibleNullability E, E?>!>|
 
 }

compiler/testData/loadJava/compiledJava/kotlinSignature/propagation/return/SubclassOfMapEntry.fir.txt

@@ -1,4 +1,4 @@
-public abstract interface SubclassOfMapEntry<K : R|ft<kotlin/Any, kotlin/Any?>!|, V : R|ft<kotlin/Any, kotlin/Any?>!|> : R|kotlin/collections/MutableMap.MutableEntry<ft<K, K?>!, ft<V, V?>!>| {
-    public abstract operator fun setValue(value: R|ft<V, V?>!|): R|ft<V, V?>!|
+public abstract interface SubclassOfMapEntry<K : R|ft<kotlin/Any, kotlin/Any?>!|, V : R|ft<kotlin/Any, kotlin/Any?>!|> : R|kotlin/collections/MutableMap.MutableEntry<ft<@FlexibleNullability K, K?>!, ft<@FlexibleNullability V, V?>!>| {
+    public abstract operator fun setValue(value: R|ft<@FlexibleNullability V, V?>!|): R|ft<@FlexibleNullability V, V?>!|
 
 }