формат примерно таков (PHPDoc):
/**
* Set the default fetch mode for this statement
* @param mixed $mode fetch mode
* @return CDbCommand
* @see http://www.php.net/manual/en/function.PD...
* @since 1.1.7
*/
public function setFetchMode($mode)
{
$params=func_get_args();
$this->_fetchMode = $params;
return $this;
}