code: public ElementWithOptions addOptionToGroup(String value, String text, String groupId) {
          if (value == null) {
              value = "";
          }
  
          value = value.trim();
  
          this.addOptionToGroup(new Option(value, text), groupId);
  
          return this;
      }
docs: Adds an option to the group of this element with the given id.
  If the group is not found, it's created with null text.
  @param value Unique value in this element
  @param text Option text
  @param groupId Id of the option group
  @return This element