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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 configure_owner(self, owner='www-data'):
 """Shortcut to set process owner data. :param str|unicode owner: Sets user and group. Default: ``www-data``. """

        if owner is not None:
            self.main_process.set_owner_params(uid=owner, gid=owner)

        return self