code: public function setHandledDataItem($value)
      {
          if (isset($this->_pairedDataItem)) {
              $this->pairedDataItem->handledDataItem = $value;
          }
          if (!$this->_handledDataItem && $value) {
              $this->dataSource->reduceRemaining($this);
          }
          $this->clean();
  
          return $this->_handledDataItem = $value;
      }
docs: Set handled data item.
  
  @param [[@doctodo param_type:value]] $value [[@doctodo param_description:value]]
  
  @return [[@doctodo return_type:setHandledDataItem]] [[@doctodo return_description:setHandledDataItem]]