public ActionResult RemoveUserFromGuild(int userId, int guildId)
        {
            var userGuildModelFromRepo = _repository.GetGuildUser(guildId, userId);

            if (userGuildModelFromRepo == null)
            {
                return(NotFound());
            }
            _repository.RemoveUserFromGuild(userGuildModelFromRepo);
            _repository.SaveChanges();
            return(NoContent());
        }