public StateMachine<Status, Operation> StateMachine()
{
var machine = new StateMachine<Status, Operation>(() => this.Status, (x) => this.Status = x);
machine
.When(Status.UnSaved)
.Permit(Operation.Save, Status.Saved);
machine
.When(Status.Saved)
.Permit(Operation.Save)
.Permit(Operation.Submit, Status.Submitted);
return machine;
}