protected function _deserializeBooleanExtractionPaths(DOMXPath $xpath)
	{
		foreach ($this->_booleanExtractionPaths as $setter => $path) {
			$value = $xpath->evaluate($path);
			$this->$setter($this->_helper->convertStringToBoolean($value));
		}
		return $this;
	}
protected function _deserializeBooleanExtractionPaths(DOMXPath $xpath)
	{
		foreach ($this->_booleanExtractionPaths as $setter => $path) {
			$value = $xpath->evaluate($path);
			$this->$setter($this->_helper->convertStringToBoolean($value));
		}
		return $this;
	}
protected function _deserializeBooleanExtractionPaths ( DOMXPath $ xpath ) { foreach ( $ this -> _booleanExtractionPaths as $ setter => $ path ) { $ value = $ xpath -> evaluate ( $ path ) ; $ this -> $ setter ( $ this -> _helper -> convertStringToBoolean ( $ value ) ) ; } return $ this ; }
boolean values have to be handled specially

@param  DOMXPath
@return self
boolean values have to be handled specially