IDEA-90883 (do not insert super call to implemented extension method)

java/java-tests/testData/codeInsight/overrideImplement/beforeDoNotImplementExtensionMethods.java

@@ -0,0 +1,12 @@
+interface A<T> {
+    void m1(T t);
+    void m2();
+}
+
+interface B<T> extends A<T> {
+    void m1(T t) default { }
+}
+
+class MyClass<T> implements B<T> {
+    <caret>
+}