X-Tension support in .NetAPI

As I understand it, a user defined server extension can only be called using X-Query. My question is, does any one knows how to call a server extension using .NetAPI. I can only find Xquery method in .NetAPI but not for X-Query.

Sorry, there is no support for X-Query in .Net API. In the next Tamino version Server Extension functions will be supported in XQuery.