Hooks for for the RPC system.
Roughly corresponds to capability.h in the C++ implementation.
An untyped client.
The values of the parameters passed to a method call, as seen by the server.
A computation that might eventually resolve to a value of type
T or to an error
E. Dropping the promise cancels the computation.
A promise for a result from a method call.
A method call that has not been sent yet.
A response from a method call, as seen by the client.
The return values of a method, written in-place by the method body.