jetpack_backup_cleanup_helper_scripts, array( Automattic\Jetpack\Backup\V0005\Helper_Script_Manager, cleanup_expired_helper_scripts

jetpack_backup_cleanup_helper_scripts, array( Automattic\Jetpack\Backup\V0005\Helper_Script_Manager, cleanup_expired_helper_scripts

Hook Type: action

See hook in action

See this hook used in plugins: