make method static: convert method reference to lambda (IDEA-191425)

java/java-tests/testData/refactoring/makeMethodStatic/afterExpandMethodReference.java

@@ -0,0 +1,20 @@
+import java.util.function.Function;
+
+class Foo {
+  Bar frobnitz(Function<Foo, Bar> f) {
+    return f.apply(this);
+  }
+}
+
+class Bar {
+  static Bar frob(Bar anObject, Foo foo) {
+    return anObject;
+  }
+}
+
+class Baz {
+  public static void main(String[] args) {
+    Bar bar = new Bar();
+    new Foo().frobnitz(foo -> Bar.frob(bar, foo));
+  }
+}