message getChartResponse
parts 
getChartResponseDoc
element base:getChartResponse
used by 
Operation getChart in PortType EventCollectorReportService
source  
<wsdl:message name="getChartResponse">
  <wsdl:part name="getChartResponseDoc" element="base:getChartResponse"/>
</wsdl:message>

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