Method prepareDocument

/**
 * Prepares the document
 *
 * @return  void
 *
 * @since   3.2
 */
protected function prepareDocument()
{
    // Because the application sets a default page title, we need to get it from the menu item itself
    $menu = Factory::getApplication()->getMenu()->getActive();
    if ($menu) {
        $this->params->def('page_heading', $this->params->get('page_title', $menu->title));
    } else {
        $this->params->def('page_heading', Text::_($this->pageHeading));
    }
    $this->setDocumentTitle($this->params->get('page_title', ''));
    if ($this->params->get('menu-meta_description')) {
        $this->document->setDescription($this->params->get('menu-meta_description'));
    }
    if ($this->params->get('robots')) {
        $this->document->setMetaData('robots', $this->params->get('robots'));
    }
}