/*
   * Set the authentication method string corresponding to the given
   * auth method id
   *
   * Value must be one of:
   *   +Openwsman::NO_AUTH+
   *   +Openwsman::BASIC_AUTH+
   *   +Openwsman::DIGEST_AUTH+
   *   +Openwsman::PASS_AUTH+
   *   +Openwsman::NTLM_AUTH+
   *   +Openwsman::GSSNEGOTIATE_AUTH+   
   *
   * call-seq:
   *   transport.auth_name(Integer) -> String
   */
  static const char *auth_name(int auth) {