override clone specifics (IDEA-67754)

java/java-tests/testData/codeInsight/daemonCodeAnalyzer/advHighlighting6/IDEADEV11877.java

@@ -1,7 +1,19 @@
 interface MyCloneable {
 
     //protected method from java.lang.Object is not implicitly declared in interface with no base interfaces
-    <error descr="'clone()' in 'MyCloneable' clashes with 'clone()' in 'java.lang.Object'; attempting to use incompatible return type">int</error> clone();
+    int clone();
 
     <error descr="'toString()' in 'MyCloneable' clashes with 'toString()' in 'java.lang.Object'; attempting to use incompatible return type">int</error> toString();
+}
+
+interface MyCloneable1 {
+  <error descr="Method does not override method from its superclass">@Override</error>
+  Object clone();
+}
+
+class MyCloneable2 {
+  @Override
+  public Object clone() {
+    return null;
+  }
 }