wpsnoop wp-content/mu-plugins/wxy_advanced_multitheme_filter_plugins.php file is used by 1 plugin/theme
WordPress files make up the basic building blocks of plugins and themes.
This page provides some information on the wp-content/mu-plugins/wxy_advanced_multitheme_filter_plugins.php file and a list of plugins and themes that implement it.
The following plugin create a file called wp-content/mu-plugins/wxy_advanced_multitheme_filter_plugins.php: