public static void copyThumbnail(ForeignPK fromPK, ForeignPK toPK) {
    ThumbnailDetail vignette =
        ThumbnailController.getCompleteThumbnail(
            new ThumbnailDetail(
                fromPK.getInstanceId(),
                Integer.parseInt(fromPK.getId()),
                ThumbnailDetail.THUMBNAIL_OBJECTTYPE_PUBLICATION_VIGNETTE));
    try {
      if (vignette != null) {
        ThumbnailDetail thumbDetail =
            new ThumbnailDetail(
                toPK.getInstanceId(),
                Integer.valueOf(toPK.getId()),
                ThumbnailDetail.THUMBNAIL_OBJECTTYPE_PUBLICATION_VIGNETTE);
        if (vignette.getOriginalFileName().startsWith("/")) {
          thumbDetail.setOriginalFileName(vignette.getOriginalFileName());
          thumbDetail.setMimeType(vignette.getMimeType());
        } else {
          String from = getImageDirectory(fromPK.getInstanceId()) + vignette.getOriginalFileName();

          String type = FilenameUtils.getExtension(vignette.getOriginalFileName());
          String newOriginalImage = String.valueOf(System.currentTimeMillis()) + "." + type;

          String to = getImageDirectory(toPK.getInstanceId()) + newOriginalImage;
          FileRepositoryManager.copyFile(from, to);
          thumbDetail.setOriginalFileName(newOriginalImage);

          // then copy thumbnail image if exists
          if (vignette.getCropFileName() != null) {
            from = getImageDirectory(fromPK.getInstanceId()) + vignette.getCropFileName();
            type = FilenameUtils.getExtension(vignette.getCropFileName());
            String newThumbnailImage = String.valueOf(System.currentTimeMillis()) + "." + type;
            to = getImageDirectory(toPK.getInstanceId()) + newThumbnailImage;
            FileRepositoryManager.copyFile(from, to);
            thumbDetail.setCropFileName(newThumbnailImage);
          }
          thumbDetail.setMimeType(vignette.getMimeType());
          thumbDetail.setXLength(vignette.getXLength());
          thumbDetail.setYLength(vignette.getYLength());
          thumbDetail.setXStart(vignette.getXStart());
          thumbDetail.setYStart(vignette.getYStart());
        }
        getThumbnailService().createThumbnail(thumbDetail);
      }
    } catch (Exception e) {
      throw new ThumbnailRuntimeException(
          "ThumbnailController.copyThumbnail()",
          SilverpeasRuntimeException.ERROR,
          "thumbnail_CANT_COPY_THUMBNAIL",
          e);
    }
  }