docs: def getResponseAction(self, ps, action):
          '''Returns response WS-Action if available
             action -- request WS-Action value.
          '''
          opName = self.getOperationName(ps, action)
          if self.wsAction.has_key(opName) is False:
              raise WSActionNotSpecified, 'wsAction dictionary missing key(%s)' %opName
          return self.wsAction[opName]