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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 manage_inventory(self):
 """ Manages inventory for Ansible and returns None. :returns: None """

        self._write_inventory()
        self._remove_vars()
        if not self.links:
            self._add_or_update_vars()
        else:
            self._link_or_update_vars()