public IActionResult GetUserById(int id)
        {
            UserMapper               mapper  = new UserMapper();
            AdminDataAccess          adm     = new AdminDataAccess();
            UserWithRolesOutputModel user    = new UserWithRolesOutputModel();
            UserPositionDTO          getUser = adm.GetUserWithRolesByUserId(id);

            if (getUser == null)
            {
                return(BadRequest("Такого пользователя не существует"));
            }
            else
            {
                user = mapper.ConvertUserPositionDTOToUserWithRolesOutputModel(getUser);
                return(Ok(user));
            }
        }