docs: public void setDialogCopyFolderMode(String mode) {
  
          CmsResourceCopyMode copyMode = CmsResource.COPY_AS_NEW;
          if (mode.equalsIgnoreCase(COPYMODE_SIBLING)) {
              copyMode = CmsResource.COPY_AS_SIBLING;
          } else if (mode.equalsIgnoreCase(COPYMODE_PRESERVE)) {
              copyMode = CmsResource.COPY_PRESERVE_SIBLING;
          }
          setDialogCopyFolderMode(copyMode);
      }