Entity/Menu.php
public function setPage(\Application\Sonata\PageBundle\Entity\Page $page = null)
    {
        $this->page = $page;

        return $this;
    }
public function setPage(\Application\Sonata\PageBundle\Entity\Page $page = null)
    {
        $this->page = $page;

        return $this;
    }
Set page

@param \Application\Sonata\PageBundle\Entity\Page $page
@return Menu