IDEA-175677 Duplicate generic method suggestion when inheriting from a raw type

java/java-tests/testData/codeInsight/completion/normal/DuplicateGenericMethodSuggestionWhenInheritingFromRawType.java

@@ -0,0 +1,15 @@
+interface I {
+    int indexOf(Enum<?> e);
+}
+abstract class C<T> implements I {
+    @Override
+    public int indexOf(Enum<?> e) {
+    }
+}
+
+
+class C2 extends C {
+    {
+        inde<caret>x
+    }
+}