method refs: fix qualifier when static method is moved; show conflict if instance method is moved

java/java-tests/testData/refactoring/moveInstanceMethod/MethodReference.java

@@ -0,0 +1,16 @@
+interface SAM {
+  String m(MethodReference<String> f, F f1);
+}
+
+
+class F {}
+
+class MethodReference<X> {
+  String ge<caret>tX(F f1) {
+    return null;
+  }
+
+  static void test() {
+    SAM s = MethodReference<String>::getX;
+  }
+}