public async Task <IActionResult> GetAsync([FromQuery] string lastName = null)
        {
            IEnumerable <Domain.Models.Admins> admins = await _repo.GetAdminsAsync(lastName);

            if (admins.Count() == 0)
            {
                return(NotFound("Last name not found."));
            }
            else
            {
                IEnumerable <Admins> resource = admins.Select(Mapper.MapAdmins);
                return(Ok(resource));
            }
        }