/*
   * Set subscription delivery security mode
   *
   * (auto, http basic, http digest, https basic, https digest,
   * https mutual, https mutual basic, https mutual digest,
   * http spnego kerberos, https spnego kerberos,
   * https mutual spnego kerberos)
   *
   * call-seq:
   *   options.delivery_security_mode = Openwsman::WSMAN_DELIVERY_SEC_HTTPS_BASIC
   *
   */
  void set_delivery_security_mode(unsigned int delivery_sec_mode) {