@Override
    public String toString() {
      StringBuilder sb = new StringBuilder("deleteCourse_result(");
      boolean first = true;

      sb.append("cnf:");
      if (this.cnf == null) {
        sb.append("null");
      } else {
        sb.append(this.cnf);
      }
      first = false;
      sb.append(")");
      return sb.toString();
    }