public IActionResult GetByParent(long parent)
 {
     try
     {
         return(Ok(_asmRepo.GetByParent(parent)));
     }
     catch (ParameterNullException e)
     {
         return(BadRequest(e.Message));
     }
 }
 public IEnumerable <IAssemblyDto> GetByParent(long parent)
 {
     return(_assemRepo.GetByParent(parent));
 }