public async Task <Client> GetOne(Guid id)
        {
            CustomValidator.ValidateId(id);
            await using var context = new MyDbContext(_options);
            if (Exists(id))
            {
                var clientDbModel = await context.Clients.FindAsync(id);

                return(_clientMapper.DbToDomain(clientDbModel));
            }

            return(null);
        }