extract method: do not include comments when they were not included in selection; leave assignment expressions untouched? (IDEA-72730 )

java/java-tests/testData/refactoring/extractMethod/LeaveCommentsWhenExpressionExtracted.java

@@ -0,0 +1,6 @@
+class Test {
+  void bar(){}
+  void foo() {
+    <selection>bar();</selection>//some comment here
+  }
+}

java/java-tests/testData/refactoring/extractMethod/LeaveCommentsWhenExpressionExtracted_after.java

@@ -0,0 +1,10 @@
+class Test {
+  void bar(){}
+  void foo() {
+    newMethod();//some comment here
+  }
+
+    private void newMethod() {
+        bar();
+    }
+}