my %methods = (
...
findGroups => {
    endpoint => 'https://xxx.xxx.xxx.xxx:xxxx/grouper-ws/services/GrouperService.GrouperServiceHttpSoap12Endpoint/',
    soapaction => 'urn:findGroups',
    namespace => 'http://soap.ws.grouper.middleware.internet2.edu/xsd',
    parameters => [
      SOAP::Data->new(name => 'clientVersion', type => 'xs:string', attr => {}),
      SOAP::Data->new(name => 'wsQueryFilter', type => 'ns:WsQueryFilter', attr => {}),
      SOAP::Data->new(name => 'actAsSubjectLookup', type => 'ns:WsSubjectLookup', attr => {}),
      SOAP::Data->new(name => 'includeGroupDetail', type => 'xs:string', attr => {}),
      SOAP::Data->new(name => 'params', type => 'ns:WsParam', attr => {}),
    ], # end parameters
  }, # end findGroups
); # end my %methods