ExtractMethodObjectProcessor: revert c652bbf2ea; add a comment why UnsafeReturnStatementVisitor is non-applicable here

java/java-impl/src/com/intellij/refactoring/extractMethodObject/ExtractMethodObjectProcessor.java

@@ -565,6 +565,9 @@ public class ExtractMethodObjectProcessor extends BaseRefactoringProcessor {
   private void adjustTargetClassReferences(final PsiElement body) throws IncorrectOperationException {
     PsiManager manager = PsiManager.getInstance(myProject);
     PsiClass targetClass = getMethod().getContainingClass();
+    //Actually we should go into lambdas as this/super expressions inside them still refer to the outer class instance.
+    //Visiting returns inside lambdas is safe as they never have GENERATED_RETURN inside
+    //noinspection UnsafeReturnStatementVisitor
     body.accept(new JavaRecursiveElementVisitor() {
       @Override
       public void visitReturnStatement(PsiReturnStatement statement) {
@@ -587,11 +590,6 @@ public class ExtractMethodObjectProcessor extends BaseRefactoringProcessor {
         }
       }
 
-      @Override
-      public void visitLambdaExpression(PsiLambdaExpression expression) {
-        // do not visit lambdas
-      }
-
       @Override
       public void visitClass(PsiClass aClass) {
         // do not visit sub classes