Returns a function which accepts one or more event types and resolves once the actor sends one or more events (in order).
An existing xs.Actor
A function which accepts one or more event types and resolves once the actor sends one or more events (in order).
Resolves once the actor sends one or more events (in order).
The type of the actor
The type of the receiver actor
The type of the event types
An existing xs.Actor
One or more event types (the xs.EventObject.type field)
Returns itself