code: def ssh_gss_oids(self, mode="client"):
          
          from pyasn1.type.univ import ObjectIdentifier
          from pyasn1.codec.der import encoder
  
          OIDs = self._make_uint32(1)
          krb5_OID = encoder.encode(ObjectIdentifier(self._krb5_mech))
          OID_len = self._make_uint32(len(krb5_OID))
          if mode == "server":
              return OID_len + krb5_OID
          return OIDs + OID_len + krb5_OID
docs: This method returns a single OID, because we only support the
          Kerberos V5 mechanism.
  
          :param str mode: Client for client mode and server for server mode
          :return: A byte sequence containing the number of supported
                   OIDs, the length of the OID and the actual OID encoded with
                   DER
          :note: In server mode we just return the OID length and the DER encoded
                 OID.