def lookup_ephemeral_vhd_path(self, instance_name):
    return self._lookup_vhd_path(instance_name, self.get_ephemeral_vhd_path)
def lookup_ephemeral_vhd_path(self, instance_name):
    return self._lookup_vhd_path(instance_name, self.get_ephemeral_vhd_path)