When using the StateMachine.ctor for the use with external storage

public StateMachine(Func<TState> stateAccessor, Action<TState> stateMutator)

the stateAccessor-delegate gets called rather often. For example for a simple state transition the pattern looks like this:

Loading state
Loading state
Loading state
Saving state
Loading state

If I would naively attach some service calls or database operations this might cause some pain.

What I would suggest as a default behaviour is to load state via stateAccessor() just a single time on creation of the state machine.