whmcsProxmoxAddon/core/Models/Whmcs/Constants/InvoiceItem.php

<?php

namespace ModulesGarden\ProxmoxAddon\Core\Models\Whmcs\Constants;

class InvoiceItem
{
    const TYPE_PRODUCT         = "product";
    const TYPE_ADDON           = "addon";
    const TYPE_DOMAIN          = "domainpricing"; //used only when domain type is not specified! - this type does NOT exits in database
    const TYPE_DOMAIN_REGISTER = "domainregister";
    const TYPE_DOMAIN_TRANSFER = "domaintransfer";
    const TYPE_DOMAIN_RENEW    = "domainrenew";
    const DOMAIN_TYPES         = ["domainregister", "domaintransfer", "domainrenew"];
}