bp_groups_screen_my_groups_mark_notifications()

function bp_groups_screen_my_groups_mark_notifications() {

	// Delete group request notifications for the user.
	if ( isset( $_GET['n'] ) && bp_is_active( 'notifications' ) ) {

		// Get the necessary ID's.
		$group_id = buddypress()->groups->id;
		$user_id  = bp_loggedin_user_id();

		// Mark notifications read.
		bp_notifications_mark_notifications_by_type( $user_id, $group_id, 'membership_request_accepted' );
		bp_notifications_mark_notifications_by_type( $user_id, $group_id, 'membership_request_rejected' );
		bp_notifications_mark_notifications_by_type( $user_id, $group_id, 'member_promoted_to_mod'      );
		bp_notifications_mark_notifications_by_type( $user_id, $group_id, 'member_promoted_to_admin'    );
	}
}