Scalr\Api\Service\User\V1beta0\Adapter\RoleAdapter::_category PHP Method

    protected function _category($from, $to, $action)
    {
        if ($action == self::ACT_CONVERT_TO_OBJECT) {
            $to->category = !empty($from->catId) ? ['id' => $from->catId] : null;
        } else {
            if ($action == self::ACT_CONVERT_TO_ENTITY) {
                $categoryId = ApiController::getBareId($from, 'category');
                if (!empty($categoryId)) {
                    if (!is_numeric($categoryId)) {
                        throw new ApiErrorException(400, ErrorMessage::ERR_INVALID_VALUE, "Invalid identifier of the category");
                    }
                    $to->catId = $categoryId;
                } else {
                    $to->catId = null;
                }
            } else {
                if ($action == self::ACT_GET_FILTER_CRITERIA) {
                    if (empty($from->category)) {
                        throw new ApiErrorException(400, ErrorMessage::ERR_INVALID_VALUE, "Invalid identifier of the category");
                    }
                    return [['catId' => ApiController::getBareId($from, 'category')]];
                }
            }
        }
    }