public function get_lists(){

		$mailchimp = new ApiClient();

		$mailchimp->setConfig([
			'apiKey' => $this->get_api(),
			'server' => $this->get_server_prefix()
		]);

		if(!empty($mailchimp->getPassword())){
			$lists = $mailchimp->lists->getAllLists();
			return $lists->lists;
		}

		return array();
	}