public static function menu()
 {
     $task = JFactory::getApplication()->input->get('task', '');
     Zo2Factory::import('core.classes.admin.menu');
     if (method_exists('AdminMenu', $task)) {
         echo AdminMenu::$task();
         exit;
     }
 }
<?php

/**
 * Zo2 (http://www.zootemplate.com/zo2)
 * A powerful Joomla template framework
 *
 * @link        http://www.zootemplate.com/zo2
 * @link        https://github.com/cleversoft/zo2
 * @author      ZooTemplate <http://zootemplate.com>
 * @copyright   Copyright (c) 2014 CleverSoft (http://cleversoft.co/)
 * @license     GPL v2
 */
defined('_JEXEC') or die;
Zo2Factory::import('vendor.less.lessc');
Zo2Factory::import('vendor.minify.css');
Zo2Factory::import('vendor.minify.minifier');
/**
 * Class exists checking
 */
if (!class_exists('Zo2HelperCompiler')) {
    /**
     *
     */
    class Zo2HelperCompiler
    {
        /**
         * Compile less -> css 
         * @param str $inputFile
         * @param str $outputFile
         * @return boolean
         */
 /**
  * Remove whitespace, tab, new line from input
  *
  * @param $input
  * @return mixed
  */
 protected function _compressHtml($buffer)
 {
     Zo2Factory::import('vendor.ganon.ganon');
     $dom = str_get_dom($buffer);
     HTML_Formatter::minify_html($dom);
     $buffer = (string) $dom;
     return $buffer;
 }