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.
The delta must implement this type.