code: private function mapHAlign($hAlign)
      {
          switch ($hAlign) {
              case Alignment::HORIZONTAL_GENERAL:
                  return false;
              case Alignment::HORIZONTAL_LEFT:
                  return 'left';
              case Alignment::HORIZONTAL_RIGHT:
                  return 'right';
              case Alignment::HORIZONTAL_CENTER:
              case Alignment::HORIZONTAL_CENTER_CONTINUOUS:
                  return 'center';
              case Alignment::HORIZONTAL_JUSTIFY:
                  return 'justify';
              default:
                  return false;
          }
      }
docs: Map HAlign.
  
  @param string $hAlign Horizontal alignment
  
  @return false|string