WP_Textdomain_Registry::set_cached_mo_files( string $path )

Source

* This function deletes the cache entries related to .mo files when triggered
* by specific actions, such as the completion of an upgrade process.
*
* @since 6.5.0
*
* @param WP_Upgrader $upgrader   Unused. WP_Upgrader instance. In other contexts this might be a
*                                Theme_Upgrader, Plugin_Upgrader, Core_Upgrade, or Language_Pack_Upgrader instance.
* @param array       $hook_extra {
*     Array of bulk item update data.

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