protected function check_object_id( $object_id ) {
		$fetcher = new SiteFetcher();
		$site    = $fetcher->get_check( $object_id );
		return $site->blog_id;
	}
protected function check_object_id( $object_id ) {
		$fetcher = new SiteFetcher();
		$site    = $fetcher->get_check( $object_id );
		return $site->blog_id;
	}
protected function check_object_id ( $ object_id ) { $ fetcher = new SiteFetcher ( ) ; $ site = $ fetcher -> get_check ( $ object_id ) ; return $ site -> blog_id ; }
Check that the site ID exists

@param int
Check that the site ID exists