"child_basename_matchregexp"

    $class->child_basename_matchregexp( $result_object, $regexp );

Given a regexp $regexp, match if any of "$result_object->path->children" match the given regexp.

    if ( $self->child_basename_matchregexp( $result_object, qr/^Change(.*)$/i ) ) {
        # result_object->path() contains at least one child that matches the regexp
    }

"_this_child_matchregexp"

    if ( $class->_this_child_matchregexp( $result_object, $child_path, $regexp ) ) {
        ...
    }