def get_default_sliver_attributes(self, network=None):
        if network:
            defaults = self.xml.xpath("//network[@name='%s']/sliver_defaults" % network)
        else:
            defaults = self.xml.xpath("//sliver_defaults")
        if not defaults: return []
        return SFAv1Sliver.get_sliver_attributes(defaults[0])
dataset/ETHPy150Open fp7-ofelia/ocf/optin_manager/src/python/openflow/optin_manager/sfa/rspecs/.oldversions/sfav1.py/SFAv1.get_default_sliver_attributes/original