/**
* Return if the page is indexable - by default all pages are indexable, you can override this by implementing
* the IndexableInterface on your page entity and returning false in the isIndexable method.
*
* @param HasNodeInterface $page
*
* @return boolean
*/
protected function isIndexable(HasNodeInterface $page)
{
// If the page doesn't implement IndexableInterface interface or it returns true on isIndexable, index the page
return !$page instanceof IndexableInterface || $page->isIndexable();
}
