internal StateMachineSubscriptionManager(StateMachineExecutionState executionState, Guid instanceId)
 {
     this._executionState       = executionState;
     this._setStateSubscription = new System.Workflow.Activities.SetStateSubscription(instanceId);
 }
 internal StateMachineSubscriptionManager(StateMachineExecutionState executionState, Guid instanceId)
 {
     this._executionState = executionState;
     this._setStateSubscription = new System.Workflow.Activities.SetStateSubscription(instanceId);
 }