I'm starting to create a new Wizard in Zenon 7.50 with VSTA. I've started with the Wizard_Demo as template and it looks good. My wizard must perform many different operations with functions, scripts, copy workspace, etc. I'm looking for an API description in order to navigate through classes and documentation (I came from Java world and I was expecting something like JDocs or autogenerated source documentation...) but I'm not able to find it. 
Where I can find the VSTA API documentation?

Thank you in advance.