# Zero touch - multi return. Unexpected input **URL:** \ **Category:** Developers\ **Tags:** zerotouch\ **Created:** [December 5, 2018, 5:04am UTC](https://forum.dynamobim.com/t/zero-touch-multi-return-unexpected-input/29312 "2018-12-05T05:04:58Z")\ **Posts on this page:** 1\ **Showing post:** 2
**Author:** ![Thomas\_Mahon](https://sea2.discourse-cdn.com/flex022/user_avatar/forum.dynamobim.com/thomas_mahon/32/64209_2.png) [@Thomas\_Mahon](https://forum.dynamobim.com/u/Thomas_Mahon)\ **Post date:** [December 5, 2018, 7:52pm UTC](https://forum.dynamobim.com/t/zero-touch-multi-return-unexpected-input/29312/2 "2018-12-05T19:52:37Z")
You need to make your method static so it doesn’t require and instance of your Revisions class. The unexpected node is there becuase every class in C has a constructor, hence you see it in the library (Create nodes = constructors). To prevent this, declare your own default constructor and set its access level to private; this will prevent it from importing (and therefore appearing in the library as a node). All of the above is explained in the document I linked here, plus it will resolve your other issues too: > [@Become a Dynamo Zero Touch C# Node Developer in 75 Minutes](https://forum.dynamobim.com/t/become-a-dynamo-zero-touch-c-node-developer-in-75-minutes/28007/16): > > Thanks @SeanP, thats great to hear. Well spotted, I’ve updated the document accordingly (same link)! --- _[View the full topic](https://forum.dynamobim.com/t/zero-touch-multi-return-unexpected-input/29312)._