safe delete: delete method hierarchy down to the bottom

java/java-tests/testData/refactoring/safeDelete/methodDeepHierarchy/after/Super.java

@@ -0,0 +1,9 @@
+public class Super {
+
+}
+
+class Child extends Super {
+    }
+
+class ChildChild extends Child {
+    }

java/java-tests/testData/refactoring/safeDelete/methodDeepHierarchy/before/Super.java

@@ -0,0 +1,19 @@
+public class Super {
+    void f<caret>oo() {
+    }
+
+}
+
+class Child extends Super {
+    void foo(){
+      super.foo();
+      System.out.println("do some staff");
+    }
+}
+
+class ChildChild extends Child {
+    void foo(){
+      super.foo();
+      System.out.println("here do smth else");
+    }
+}