The type of the concrete implementation, e.g.
The type of the concrete implementation, e.g. GSet[A]
.
To be specified by subclass.
Monotonic merge function.
Monotonic merge function.
The empty full state.
The empty full state. This is used when a delta is received
and no existing full state exists on the receiving side. Then
the delta is merged into the zero
to create the initial full state.