public async Task<ClienteAgente> GetClienteAgenteAsync(string codcli,
            string brand, string codage, string divisione, string desti)
        {
            return await _context.ClientiAgenti
                .FirstOrDefaultAsync(c => c.Codcli == codcli
                                       && c.Codage == codage
                                       && c.Brand == brand
                                       && c.Desti == desti);
        }

modelBuilder.Entity<ClienteAgente>()
            .HasQueryFilter(u => u.Codage == _userProvider.GetUserCode());