create method from method reference: make abstract if inside interface and not static (IDEA-156596)

java/java-tests/testData/codeInsight/daemonCodeAnalyzer/quickFix/createMethodFromMethodRef/afterAbstractInterfaceMethod.java

@@ -0,0 +1,9 @@
+// "Create method 'fooBar'" "true"
+class FooBar {
+  interface A {
+      void fooBar();
+  }
+  void m(A a){
+    Runnable r = a::fooBar;
+  }
+}

java/java-tests/testData/codeInsight/daemonCodeAnalyzer/quickFix/createMethodFromMethodRef/beforeAbstractInterfaceMethod.java

@@ -0,0 +1,7 @@
+// "Create method 'fooBar'" "true"
+class FooBar {
+  interface A {}
+  void m(A a){
+    Runnable r = a::foo<caret>Bar;
+  }
+}