invoiceninja/app/Http/Controllers/OpenAPI/PaymentSchema.php

<?php
/**
 * @OA\Schema(
 *   schema="Payment",
 *   type="object",
 *       @OA\Property(property="id", type="string", example="Opnel5aKBz", description="______"),
 *       @OA\Property(property="is_manual", type="bool", example=true, description="______"),
 * )
 */