Represents AssignableCancelable instances that are also BooleanCancelable.
Interface for AssignableCancelable types that can be assigned multiple times.
A reusable AssignableCancelable instance that's already canceled and that's going to cancel given values on assignment.
Represents an AssignableCancelable with no internal state and that doesn't do anything, either on assignment or on cancelation.
Builds a MultiAssignmentCancelable
Builds a SingleAssignmentCancelable