protected function getFormListFieldsConfiguration()
    {
        return collect($this->fields)
            ->filter(function($field) {
                return $field instanceof SharpFormListField
                    && $field->isSortable();

            })->map(function($listField) {
                return [
                    "key" => $listField->key(),
                    "orderAttribute" => $listField->orderAttribute()
                ];

            })->keyBy("key");
    }