code: def authenticateRequest(self, service_request, username, password, **kwargs):
          
          authenticator = self.getAuthenticator(service_request)
  
          if authenticator is None:
              return True
  
          args = (username, password)
  
          if hasattr(authenticator, '_pyamf_expose_request'):
              http_request = kwargs.get('http_request', None)
              args = (http_request,) + args
  
          return authenticator(*args) == True
docs: Processes an authentication request. If no authenticator is supplied,
          then authentication succeeds.
  
          @return: Returns a C{bool} based on the result of authorization. A
              value of C{False} will stop processing the request and return an
              error to the client.
          @rtype: C{bool}