ImageIO.write(thumbnail, fessConfig.getThumbnailHtmlImageFormat(), outputFile);
                image.flush();
                return Result.OK;
            } finally {
                reader.dispose();
            }
        }
        return Result.FAILED;
    }

    /**
     * Enumeration representing the possible results of thumbnail image processing.
     */
    protected enum Result {

                    // Convert zip bomb exceptions to TikaExceptions
                    sch.throwIfCauseOf(e);
                    throw e;
                }
            } finally {
                tmp.dispose();
            }
        }
    }

    /**
     * This interface is for writing a content.
     */
    @FunctionalInterface
    protected interface ContentWriter {
        /**