def _get_s_bit(self):
return self.__s_bit<EOL>
Getter method for s_bit, mapped from YANG variable /network_instances/network_instance/protocols/protocol/isis/levels/level/link_state_database/lsp/tlvs/tlv/extended_ipv4_reachability/prefixes/prefix/state/s_bit (boolean)

    YANG Description: The Sub-TLV present bit. If UNSET, the octets of Sub-TLVs are not
present. Otherwise, the bit is set and the octet following the prefix
will contain the length of the Sub-TLV portion of the structure.