public function __construct() {
		$api_key = get_option( MortgagePlatform::$prefix . 'leads' )['lead_geo'];

		if ( ! preg_match( '/^[0-9a-z]{64}$/', $api_key ) ) {
			throw exception( 'Invalid IPInfoDB API key.' );
		}

		$this->api_key = $api_key;
	}