CMB2::mb_object_type PHP Метод

    public function mb_object_type()
    {
        if (null !== $this->mb_object_type) {
            return $this->mb_object_type;
        }
        if ($this->is_options_page_mb()) {
            $this->mb_object_type = 'options-page';
            return $this->mb_object_type;
        }
        $registered_types = $this->prop('object_types');
        if (!$registered_types) {
            $this->mb_object_type = 'post';
            return $this->mb_object_type;
        }
        $type = false;
        // check if 'object_types' is a string
        if (is_string($registered_types)) {
            $type = $registered_types;
        } elseif (is_array($registered_types) && 1 === count($registered_types)) {
            $last = end($registered_types);
            if (is_string($last)) {
                $type = $last;
            }
        } elseif (is_array($registered_types)) {
            $page_type = $this->current_object_type();
            if (in_array($page_type, $registered_types, true)) {
                $type = $page_type;
            }
        }
        // Get our object type
        switch ($type) {
            case 'user':
            case 'comment':
            case 'term':
                $this->mb_object_type = $type;
                break;
            default:
                $this->mb_object_type = 'post';
                break;
        }
        return $this->mb_object_type;
    }