osb/app/Models/Product/Generic.php

<?php

namespace App\Models\Product;

use Illuminate\Support\Collection;

use App\Interfaces\ProductItem;
use App\Models\Invoice;
use App\Models\Service\Generic as ServiceGeneric;
use App\Models\Supplier\Generic as SupplierGeneric;

final class Generic extends Type implements ProductItem
{
	protected $table = 'product_generic';

	// The model that is referenced when this product is ordered
	protected string $order_model = ServiceGeneric::class;

	// When comparing billing/pricing/charging, what metric to normalise to
	const DefaultBill = Invoice::BILL_MONTHLY;
	// The model that the supplier supplies
	const SupplierModel = SupplierGeneric::class;

	/* INTERFACES */

	public function allowance(): Collection
	{
		// TODO: Implement allowance() method.
	}

	public function allowance_string(): string
	{
		// TODO: Implement allowance_string() method.
	}

	public function hasUsage(): bool
	{
		return FALSE;
	}
}