Type Alias RequestAddress 

pub type RequestAddress<M, R, MUT, const N: usize = 1> = Sender<'static, MUT, Request<M, R>, N>;

Type alias over a Address using a Request as message

Safety: You should not cancel a request, it will cause the requesting thread to panic, and cause UB if the Actor is still alive after the panic (i.e. in a different thread)

Aliased Type

pub struct RequestAddress<M, R, MUT, const N: usize = 1> { /* private fields */ }