code: def assertit(self):
          
          data = clips.data.DataObject(self._env)
          data.value = list(self._multifield)
  
          if lib.EnvPutFactSlot(
                  self._env, self._fact, ffi.NULL, data.byref) != 1:
              raise CLIPSError(self._env)
  
          super(ImpliedFact, self).assertit()
docs: Assert the fact within CLIPS.