code: private void setupResourceType() {
  
          IndexedContainer resTypes = CmsVaadinUtils.getResourceTypesContainer();
          resTypes.addContainerFilter(CmsVaadinUtils.FILTER_NO_FOLDERS);
          m_resType.setContainerDataSource(resTypes);
          m_resType.setItemCaptionPropertyId(PropertyId.caption);
          m_resType.setItemIconPropertyId(PropertyId.icon);
      }
docs: Sets up the combo box for choosing the resource type.<p>