code: public String buildConfirmation() {
  
          StringBuffer result = new StringBuffer(512);
          boolean isFolder = false;
          if (!isMultiOperation()) {
              try {
                  isFolder = getCms().readResource(getParamResource(), CmsResourceFilter.ALL).isFolder();
              } catch (CmsException e) {
                  // ignore
              }
          }
          result.append("<div id='conf-msg'>\n");
          if (isMultiOperation() || isFolder || (hasSiblings() && hasCorrectLockstate())) {
              result.append(key(Messages.GUI_DELETE_MULTI_CONFIRMATION_0));
          } else {
              result.append(key(Messages.GUI_DELETE_CONFIRMATION_0));
          }
          result.append("\n</div>\n");
          return result.toString();
      }
docs: Returns the html for the confirmation message.<p>
  
  @return the html for the confirmation message