src/Sasedev/Commons/SharedBundle/Controller/BaseController.php
public function addHeadLink(Link $head_link)
	{

		$this->head_links[] = $head_link;

		$this->twig_vars['head_links'] = $this->head_links;

		return $this;

	}
public function addHeadLink(Link $head_link)
	{

		$this->head_links[] = $head_link;

		$this->twig_vars['head_links'] = $this->head_links;

		return $this;

	}
Add $head_link;

@param Link $head_link

@return BaseController $this