docs: public JSONWriter object() throws JSONException {
      if (this.mode == 'i') {
        this.mode = 'o';
      }
      if (this.mode == 'o' || this.mode == 'a') {
        this.append("{");
        this.push(new JSONObject());
        this.comma = false;
        return this;
      }
      throw new JSONException("Misplaced object.");
  
    }