code: def writeClient(self, fd, sdClass=None, **kw):
          
          sdClass = sdClass or ServiceDescription
          assert issubclass(sdClass, ServiceDescription), \
              'parameter sdClass must subclass ServiceDescription'
  
  #        header = '%s \n# %s.py \n# generated by %s\n%s\n'\
  #                  %('#'*50, self.getClientModuleName(), self.__module__, '#'*50)
          print >>fd, '#'*50
          print >>fd, '# file: %s.py' %self.getClientModuleName()
          print >>fd, '# '
          print >>fd, '# client stubs generated by "%s"' %self.__class__
          print >>fd, '#     %s' %' '.join(sys.argv)
          print >>fd, '# '
          print >>fd, '#'*50
  
          self.services = []
          for service in self._wsdl.services:
              sd = sdClass(self._addressing, do_extended=self.do_extended, 
                           wsdl=self._wsdl)
              if len(self._wsdl.types) > 0:
                  sd.setTypesModuleName(self.getTypesModuleName(), 
                                        self.getTypesModulePath())
  #                sd.setMessagesModuleName(self.getMessagesModuleName(), 
  #                                         self.getMessagesModulePath())
  
              self.gatherNamespaces()
              sd.fromWsdl(service, **kw)
              sd.write(fd)
              self.services.append(sd)
docs: write out client module to file descriptor.
          Parameters and Keywords arguments:
              fd -- file descriptor
              sdClass -- service description class name
              imports -- list of imports
              readerclass -- class name of ParsedSoap reader
              writerclass -- class name of SoapWriter writer