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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 list_bandwidth_limit_rules(self, policy_id, retrieve_all=True, **_params):
 """Fetches a list of all bandwidth limit rules for the given policy."""

        return self.list('bandwidth_limit_rules',
                         self.qos_bandwidth_limit_rules_path % policy_id,
                         retrieve_all, **_params)