<?php
require_once (ABSPATH . '/wp-admin/includes/plugin.php');
require_once (ABSPATH . '/wp-admin/includes/class-wp-filesystem-base.php');
require_once (ABSPATH . '/wp-admin/includes/class-wp-filesystem-direct.php');
require_once (ABSPATH . '/wp-includes/pluggable.php');
require_once (ABSPATH . '/wp-admin/includes/template.php');