def _get_helper_only(self):
return self.__helper_only<EOL>
Getter method for helper_only, mapped from YANG variable /network_instances/network_instance/protocols/protocol/isis/global/graceful_restart/state/helper_only (boolean)

    YANG Description: Enable or disable the IS-IS graceful restart helper function. When
this leaf is set, the local system does not utilise the IS-IS
graceful restart procedures during its own restart, but supports
retaining forwarding information during a remote speaker's restart.