protected BehaviorGraphEdgeProperty(BehaviorLevel level)
 {
     _level = level;
 }
 protected BehaviorGraphEdgeProperty(BehaviorLevel level)
 {
     _level = level;
 }
 protected BehaviorGraphNodeState(BehaviorLevel level)
 {
     _level = level;
 }
 protected BehaviorGraphNodeState(BehaviorLevel level)
 {
     _level = level;
 }