public Task <Supplier> GetSupplierAsync([ID(nameof(Supplier))] int id, SupplierByIdDataLoader dataLoader, CancellationToken cancellationToken) => dataLoader.LoadAsync(id, cancellationToken);
public Task <Supplier> OnSupplierCreatedAsync( [EventMessage] int supplierId, SupplierByIdDataLoader supplierById, CancellationToken cancellationToken) => supplierById.LoadAsync(supplierId, cancellationToken);