public static function registerPlugin($plugin, $name = null, $type = null)
{
$pluginName = empty($name) ? $plugin->pluginName : $name;
$pluginType = empty($type) ? $plugin->options['build'] !== 'free' ? 'premium' : 'free' : $type;
if (!isset(self::$_plugins[$pluginName])) {
self::$_plugins[$pluginName] = array();
}
self::$_plugins[$pluginName][$pluginType] = $plugin;
self::$_installedPlugins[] = array('name' => $pluginName, 'type' => $type, 'plugin' => $plugin);
self::$_hasPremiumPlugins = self::$_hasPremiumPlugins || 'premium' === $pluginType;
}