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