message onNotificationRequest
parts 
onNotificationRequestDoc
element dto:onNotification
used by 
Operation onNotification in PortType NotificationListener
source  
<wsdl:message name="onNotificationRequest">
  <wsdl:part name="onNotificationRequestDoc" element="dto:onNotification"/>
</wsdl:message>

WSDL documentation generated by XMLSpy WSDL Editor http://www.altova.com/xmlspy