IDEA-120784 "Class is public should be declared in a file named <Classname>.java" for inner interface

java/java-tests/testData/codeInsight/daemonCodeAnalyzer/advHighlighting7/ambiguousInferenceOrder/pck/AmbiguousMethodCall.java

@@ -17,7 +17,7 @@ package pck;
 
 class Key<K>{}
 
-public class C {
+class C {
      public <T> void putCopyableUserData(Key<T> key, T value) {
      }
 }