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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 todict(self):
 """ Convert this node to a dictionary tree. """

        dict_entry = []
        for k,v in self.items():
            if isinstance(v, ConfigTree):
                dict_entry.append((k, v.todict()))
            else:
                dict_entry.append((k, v))
        return dict(dict_entry)