Suppose I have the following class hierarchy:
Class A {...}
Class B : A {...}
Class C : A {...}
What I currently have is
Class D<T> where T : A {...}
but I'd like something of the form
Class D<T> where T in {B,C}
This is due to some odd behavior I'm not responsible for where B and C have common methods which aren't in A, but it would be nice to be able to call them in D on T.
Note: I don't have access to A,B or C to edit them