code: protected void ensureChecked(CmsUUID structureId) {
  
          CmsRadioButton button = (CmsRadioButton)m_listPanel.getItem(
              String.valueOf(structureId)).getDecorationWidgets().get(0);
          if (!button.isChecked()) {
              button.setChecked(true);
          }
      }
docs: Makes sure the item with the given structure id is checked.<p>
  
  @param structureId the structure id