public UserShipperData AddUserToShipper(Guid customerId, Guid userId, Guid identUserId)
        {
            var user = _context.Users.Where(x => x.IdentUserId == identUserId).FirstOrDefault();

            var userShipper = new UserShipperEntity {
                CustomerId = customerId,
                UserId     = userId
            };


            _context.UserShippers.Add(userShipper);
            _context.SaveChanges(user.Username);
            return(_mapper.Map <UserShipperData>(userShipper));
        }
        public List <UserShipperData> AddUsersToShipper(Guid customerId, List <Guid> userIds, Guid identUserId)
        {
            var user = _context.Users.Where(x => x.IdentUserId == identUserId).FirstOrDefault();

            var userShippers = new List <UserShipperEntity>();

            foreach (var userId in userIds)
            {
                var userShipper = new UserShipperEntity
                {
                    CustomerId = customerId,
                    UserId     = userId
                };

                userShippers.Add(userShipper);
            }

            _context.UserShippers.AddRange(userShippers);
            _context.SaveChanges(user.Username);
            return(_mapper.Map <List <UserShipperData> >(userShippers));
        }