unimplement interface in generics case: check by subst. signature (IDEA-67230 )

java/java-tests/testData/codeInsight/daemonCodeAnalyzer/quickFix/unimplement/beforeGenerics.java

@@ -0,0 +1,12 @@
+// "Unimplement Interface" "true"
+class A implements II<S<caret>tring> {
+  public String toString() {
+    return super.toString();
+  }
+
+    public void foo(String ty){}
+}
+
+interface II<T> {
+  void foo(T ty);
+}