<wsdl:message name="Event"> 
          <part name="id" type="xsd:string" /> 
          <part name="source" type="xsd:string" /> 
          <part name="severity" type="xsd:string" /> 
          <part name="text" type="xsd:string" /> 
  </wsdl:message> 

  <wsdl:operation name="deliverEvent"> 
          <wsdl:output message="tns:Event" /> 
  </wsdl:operation>