final List<String> fileNameItems = new ArrayList<>();
        final List<File> fileList = getAccessibleFileList(baseDir);
        final int length = baseDir.getAbsolutePath().length();
        for (final File file : fileList) {
            fileNameItems.add(file.getAbsolutePath().substring(length));
        }
        return fileNameItems;
    }

    // ===================================================================================

        final File targetClassesDir = new File(targetDir, "classes");
        if (targetClassesDir.isDirectory()) {
            buf.append(cpSeparator);
            buf.append(targetClassesDir.getAbsolutePath());
        }
        // WEB-INF/lib
        appendJarFile(cpSeparator, buf, new File(servletContext.getRealPath("/WEB-INF/lib")),
                "WEB-INF" + File.separator + "lib" + File.separator);

        final File targetClassesDir = new File(targetDir, "classes");
        if (targetClassesDir.isDirectory()) {
            buf.append(cpSeparator);
            buf.append(targetClassesDir.getAbsolutePath());
        }
        // WEB-INF/lib
        appendJarFile(cpSeparator, buf, new File(servletContext.getRealPath("/WEB-INF/lib")),
                "WEB-INF" + File.separator + "lib" + File.separator);

        if (baseDir.mkdirs()) {
            logger.info("Created: {}", baseDir.getAbsolutePath());
        }
        if (!baseDir.isDirectory()) {
            throw new FessSystemException("Not found: " + baseDir.getAbsolutePath());
        }

        if (logger.isDebugEnabled()) {
            logger.debug("Thumbnail Directory: {}", baseDir.getAbsolutePath());
        }

            ownTmpDir = new File(tmpDir, "fessTmpDir_" + sessionId);
            if (ownTmpDir.mkdirs()) {
                cmdList.add("-Djava.io.tmpdir=" + ownTmpDir.getAbsolutePath());
                cmdList.add("-Dpdfbox.fontcache=" + ownTmpDir.getAbsolutePath());
            } else {
                ownTmpDir = null;
            }
        }

        cmdList.add(ComponentUtil.getThumbnailManager().getThumbnailPathOption());

                    CopyUtil.copy(is, os);
                } catch (final Exception e) {
                    if (tempFile.exists() && !tempFile.delete()) {
                        logger.warn("Failed to delete {}.", tempFile.getAbsolutePath());
                    }
                    logger.debug("Failed to copy {}", filename, e);
                    throwValidationError(messages -> messages.addErrorsFailedToInstallPlugin(GLOBAL, filename), this::asListHtml);

                }
            }

            if (pluginDescriptor == null) {
                throw new IOException("No plugin descriptor found at " + getPluginDescriptorLocation());
            }
        } catch (IOException e) {
            throw new PluginDescriptorParsingException(plugin, pluginFile.getAbsolutePath(), e);
        }

                if (propFile.delete() && logger.isDebugEnabled()) {
                    logger.debug("Deleted a temp file: {}", propFile.getAbsolutePath());
                }
                systemProperties.reload(propFile.getAbsolutePath());
                propFile.deleteOnExit();
            } catch (final Exception e) {
                logger.warn("Failed to create system properties file.", e);

                                fileList.add(jspPath);
                            } catch (final IOException ex) {
                                logger.warn("Could not copy from {} to {}", baseJspFile.getAbsolutePath(), jspFile.getAbsolutePath(), ex);
                            }
                        }
                    });
                }));
        return fileList;
    }

        buffer.append(repository.getUrl());

        return buffer.toString();
    }

    private void writeLastUpdated(File touchfile, String key, String error) {
        synchronized (touchfile.getAbsolutePath().intern()) {
            if (!touchfile.getParentFile().exists()
                    && !touchfile.getParentFile().mkdirs()) {
                getLogger()