protected function _get_transient_api_data() {
		$transient_name = sprintf( 'wp_github_theme_updater_%1$s', $this->theme_name );
		$transient = get_transient( $transient_name );

		if ( false !== $transient ) {
			return $transient;
		}

		$api_data = $this->_get_github_api_data();
		set_transient( $transient_name, $api_data, 60 * 5 );
		return $api_data;
	}