public void AddExecuteObject(IFixedExecute execute)
 {
     if (_interactiveObjects == null)
     {
         _interactiveObjects = new List <IFixedExecute> {
             execute
         };
         return;
     }
     _interactiveObjects.Add(execute);
 }
 public void DeleteExecuteObject(IFixedExecute execute)
 {
     _interactiveObjects.Remove(execute);
 }