public function getChildren($oCriteria = null, PropelPDO $oConnection = null) { if ($oCriteria !== null) { $aResult = parent::getChildren($oCriteria, $oConnection); foreach ($aResult as $oChild) { $oChild->aNestedSetParent = $this; } return $aResult; } if ($this->collNestedSetChildren === null) { parent::getChildren($oCriteria, $oConnection); foreach ($this->collNestedSetChildren as $oChild) { $oChild->aNestedSetParent = $this; } } return $this->collNestedSetChildren; }