Rename plugins to libs and update all file references

libs/stripe-php/lib/Service/Billing/CreditBalanceSummaryService.php

@@ -0,0 +1,28 @@
+<?php
+
+// File generated from our OpenAPI spec
+
+namespace Stripe\Service\Billing;
+
+/**
+ * @phpstan-import-type RequestOptionsArray from \Stripe\Util\RequestOptions
+ *
+ * @psalm-import-type RequestOptionsArray from \Stripe\Util\RequestOptions
+ */
+class CreditBalanceSummaryService extends \Stripe\Service\AbstractService
+{
+    /**
+     * Retrieves the credit balance summary for a customer.
+     *
+     * @param null|array{customer?: string, customer_account?: string, expand?: string[], filter: array{applicability_scope?: array{price_type?: string, prices?: array{id: string}[]}, credit_grant?: string, type: string}} $params
+     * @param null|RequestOptionsArray|\Stripe\Util\RequestOptions $opts
+     *
+     * @return \Stripe\Billing\CreditBalanceSummary
+     *
+     * @throws \Stripe\Exception\ApiErrorException if the request fails
+     */
+    public function retrieve($params = null, $opts = null)
+    {
+        return $this->request('get', '/v1/billing/credit_balance_summary', $params, $opts);
+    }
+}