Piwik\DataTable\Row::setColumn PHP Method

    public function setColumn($name, $value)
    {
        $this[$name] = $value;
    }

 /**
  * @param Row $row
  * @param DataTable $dataTable
  * @param string $labelPrefix
  * @param bool $parentLogo
  */
 private function flattenRow(Row $row, DataTable $dataTable, $labelPrefix = '', $parentLogo = false)
 {
     $label = $row->getColumn('label');
     if ($label !== false) {
         $label = trim($label);
         if (substr($label, 0, 1) == '/' && $this->recursiveLabelSeparator == '/') {
             $label = substr($label, 1);
         }
         $label = $labelPrefix . $label;
         $row->setColumn('label', $label);
     }
     $logo = $row->getMetadata('logo');
     if ($logo === false && $parentLogo !== false) {
         $logo = $parentLogo;
         $row->setMetadata('logo', $logo);
     }
     $subTable = $this->loadSubtable($dataTable, $row);
     $row->removeSubtable();
     if ($subTable === null) {
         if ($this->includeAggregateRows) {
             $row->setMetadata('is_aggregate', 0);
         }
         $dataTable->addRow($row);
     } else {
         if ($this->includeAggregateRows) {
             $row->setMetadata('is_aggregate', 1);
             $dataTable->addRow($row);
         }
         $prefix = $label . $this->recursiveLabelSeparator;
         foreach ($subTable->getRows() as $row) {
             $this->flattenRow($row, $dataTable, $prefix, $logo);
         }
     }
 }