code: private function convertRenderGroupType($type)
      {
          $lookup = [
              'char'    => GroupAndSortingInformationInterface::GROUP_CHAR,
              'digit'   => GroupAndSortingInformationInterface::GROUP_DIGIT,
              'day'     => GroupAndSortingInformationInterface::GROUP_DAY,
              'weekday' => GroupAndSortingInformationInterface::GROUP_WEEKDAY,
              'week'    => GroupAndSortingInformationInterface::GROUP_WEEK,
              'month'   => GroupAndSortingInformationInterface::GROUP_MONTH,
              'year'    => GroupAndSortingInformationInterface::GROUP_YEAR,
          ];
          if (array_key_exists($type, $lookup)) {
              return $lookup[$type];
          }
  
          return GroupAndSortingInformationInterface::GROUP_NONE;
      }
docs: Convert a render group type from InputScreen value to GroupAndSortingInformationInterface value.
  
  @param string $type The group type.
  
  @return string