public function addExportCallback($text, $callback, $filtered = false)
	{
		if (!is_callable($callback)) {
			throw new DataGridException('Second parameter of ExportCallback must be callable.');
		}

		return $this->addToExports(new Export\Export($this, $text, $callback, $filtered));
	}
public function addExportCallback($text, $callback, $filtered = false)
	{
		if (!is_callable($callback)) {
			throw new DataGridException('Second parameter of ExportCallback must be callable.');
		}

		return $this->addToExports(new Export\Export($this, $text, $callback, $filtered));
	}
public function addExportCallback ( $ text , $ callback , $ filtered = false ) { if ( ! is_callable ( $ callback ) ) { throw new DataGridException ( 'Second parameter of ExportCallback must be callable.' ) ; } return $ this -> addToExports ( new Export \ Export ( $ this , $ text , $ callback , $ filtered ) ) ; }
Add export of type callback
@param string $text
@param callable $callback
@param bool $filtered
@return Export\Export
Add export of type callback