After verification, what I tried did not work. Basically, I can do this:

    Public oClient As ClientAPI.Client = Nothing
    Public oUser As Object = Nothing

This will make oUser available from the object and will not cause any error. However, loLinq.oUser will not be intellisense.

What I tried earlier was:

    Public oClient As ClientAPI.Client = Nothing
    Public oUser=(From u In oClient.GetUsers()...

But, after having made more tests, I found out that this is giving an error about an object reference not found.

My goal is to declare a public Linq object in the Linq class to be available and be ready for intellisense. In the declaration, in order for that to work, I need to define oUser with a Linq statement that will not be executed but will read its signature from its parent (query). Is this possible?