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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 get_out_ip_addr(cls, tenant_id):
 """Retrieves the 'out' service subnet attributes. """

        if tenant_id not in cls.serv_obj_dict:
            LOG.error("Fabric not prepared for tenant %s", tenant_id)
            return
        tenant_obj = cls.serv_obj_dict.get(tenant_id)
        return tenant_obj.get_out_ip_addr()