References .dll

I’m working on adding a custom node using Zerotouch. I want to access the Revit BuildingPad, CurveLoop and ElementId. In VS I reference the RevitAPI.dll & RevitAPIUI and add using Autodesk.Revit.DB; How would access these objects in Dynamo.

I references the DynamoServices, however it seems limited to only a handful of methods. What other Dynamo .dll files do I need to reference the equivalent of the Revit.DB?

Thank you.