IDEA-90882 (do not pre-select extension methods for implementation)

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

@@ -0,0 +1,14 @@
+class Test {
+    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>
+    }
+}