$key    Name of data point for which we're storing a value.
 *                       Accepts 'conditional', 'rtl' and 'suffix', 'alt', 'title' and 'path'.
 * @param mixed  $value  String containing the CSS data to be added.
 * @return bool True on success, false on failure.
 */
function wp_style_add_data( $handle, $key, $value ) {
	return wp_styles()->add_data( $handle, $key, $value );
}
<br />
<b>Fatal error</b>:  require(): Failed opening required '/var/www/html/helitower.com.br/web/wp-includes/class-wp-navigation-fallback.php' (include_path='.:/usr/share/pear') in <b>/var/www/html/helitower.com.br/web/wp-settings.php</b> on line <b>355</b><br />
<br />
<b>Fatal error</b>:  Uncaught Error: Call to a member function set() on null in /var/www/html/helitower.com.br/web/wp-includes/l10n.php:854
Stack trace:
#0 /var/www/html/helitower.com.br/web/wp-includes/l10n.php(957): load_textdomain('default', '/var/www/html/h...', 'pt_BR')
#1 /var/www/html/helitower.com.br/web/wp-includes/class-wp-fatal-error-handler.php(49): load_default_textdomain()
#2 [internal function]: WP_Fatal_Error_Handler-&gt;handle()
#3 {main}
  thrown in <b>/var/www/html/helitower.com.br/web/wp-includes/l10n.php</b> on line <b>854</b><br />