do not report unrelated return type error only for generics methods

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

@@ -0,0 +1,13 @@
+import java.util.*;
+
+class Test {
+  interface A {
+    Iterable<Integer> m(List ls);
+  }
+
+  interface B {
+    Iterable<String> m(List l);
+  }
+
+  <error descr="'m(List)' in 'Test.B' clashes with 'm(List)' in 'Test.A'; methods have unrelated return types">interface AB extends A, B</error> {}
+}