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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def _append_to_parent(self):
 """ Causes this ephemeral table to be persisted on the TOMLFile. """


        if self.__appended:
            return

        if self._parent is not None:
            self._parent.append_fresh_table(self)

        self.__appended = True