protected function getQueuedStylesToProcess()
{
$wp_styles = $this->getStyles();
$to_process = array();
foreach ((array) $wp_styles->queue as $style_id) {
if (preg_match(self::$match_pattern, $wp_styles->registered[$style_id]->src)) {
$to_process[] = $style_id;
}
}
return apply_filters('wp-less_get_queued_styles_to_process', $to_process);
}