public function initPHPExcelWriter($type)
{
/**
* @var PHPExcel_Writer_CSV $writer
*/
$writer = $this->_objPHPExcelWriter = PHPExcel_IOFactory::createWriter($this->_objPHPExcel, $type);
if ($this->_exportType === self::FORMAT_TEXT) {
$writer->setDelimiter("\t");
}
$this->raiseEvent('onInitWriter', [$this->_objPHPExcelWriter, $this]);
}