private inner class can't be used in top class signature ( IDEA-57751)

java/java-tests/testData/codeInsight/daemonCodeAnalyzer/genericsHighlighting/PrivateInnerClassRef.java

@@ -0,0 +1,14 @@
+import java.util.Comparator;
+
+public abstract class A implements <error descr="'A.B' has private access in 'A'">Comparator<A.B></error> {
+
+  private static class B {
+  }
+
+  private interface I extends Comparator<I>{}
+  private interface I1 extends Comparator<I>{}
+}
+
+//abstract class C implements error descr="'C.D' has private access in 'C'">C.D error {
+//  private static class D {}
+//}