rwmb_normalize_meta_box Filter not present in code but is present in docs

I want to filter the title of the metabox.

I found this filter, rwmb_normalize_meta_box_id_meta_box, in the documentation but cannot find it within the source code even when I search for rwmb_normalize.

https://docs.metabox.io/filters/#rwmb_normalize_meta_box_id_meta_box

Is this filter still available or is the documentation out of date?

How can I filter the title of a metabox?

Like this?

add_filter("rwmb_normalize_{$metabox_id}_meta_box", 'prefix_change_meta_box_title' ), 10, 1 );
function prefix_change_meta_box_title( $meta_box ) {
    $meta_box['title'] = esc_html__( 'New title', 'text-domain' );
    return $meta_box;
}