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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 exclude(self):
 """ Custom descriptor for exclude since there is no get_exclude method to be overridden """

        exclude = self.VERSIONED_EXCLUDE

        if super(VersionedAdmin, self).exclude is not None:
            # Force cast to list as super exclude could return a tuple
            exclude = list(super(VersionedAdmin, self).exclude) + exclude

        return exclude