Method loadLanguage

/**
 * Custom loadLanguage method
 *
 * @param   string  $path  The path where we find language files
 *
 * @return  void
 *
 * @since   3.4
 */
public function loadLanguage($path = null)
{
    $source = $this->parent->getPath('source');
    $client = $this->parent->extension->client_id ? JPATH_ADMINISTRATOR : JPATH_SITE;
    if (!$source) {
        $this->parent->setPath('source', $client . '/modules/' . $this->parent->extension->element);
    }
    $this->setManifest($this->parent->getManifest());
    if ($this->getManifest()->files) {
        $extension = $this->getElement();
        if ($extension) {
            $source = $path ?: ($this->parent->extension->client_id ? JPATH_ADMINISTRATOR : JPATH_SITE) . '/modules/' . $extension;
            $folder = (string) $this->getManifest()->files->attributes()->folder;
            if ($folder && file_exists($path . '/' . $folder)) {
                $source = $path . '/' . $folder;
            }
            $client = (string) $this->getManifest()->attributes()->client;
            $this->doLoadLanguage($extension, $source, \constant('JPATH_' . strtoupper($client)));
        }
    }
}