Creates a new ZRefM with the specified value.
Creates a new ZRefM with the specified value in the context of a
Managed.
Creates a new RefM and a Dequeue that will emit every change to the
RefM.
Creates a new RefM and a Dequeue that will emit every change to the
RefM.
(Since version 2.0.0) use SubscriptionRef
(Since version 2.0.0) use ZRef.Synchronized