/*
   * Set CIM Namespace for Openwsman
   * (default is root/cimv2)
   * Note:
   * Microsoft WinRM set the resource namespace by attaching it
   * to the resource URI
   *
   * See also: Openwsman.epr_prefix_for
   *
   * call-seq:
   *   options.cim_namespace = "root/interop"
   *
   */
  void set_cim_namespace(char *cim_namespace) {