Common configuration options, applicable to all the fundamental ActiveJS constructs, Units, Systems, Action and Cluster.
A unique id to identify Units, Actions, Systems, Clusters.
It's required for a Unit to be persistent.
Note: If the provided id is not null or undefined, it should be a non-empty string, otherwise an error will be thrown.
A flag to control the replay behaviour of a Unit, System, Action or Cluster.
It decides whether the value should be replayed when you subscribe to the ActiveJS construct.