CopyUtil.copy(in, ResourceUtil.getPluginPath(fileName).toFile());
                }
            } catch (final Exception e) {
                throw new PluginException("Failed to install the artifact " + artifact.getName(), e);
            }
        } else {
            try (final InputStream in = new FileInputStream(url)) {
                CopyUtil.copy(in, ResourceUtil.getPluginPath(fileName).toFile());

        } catch (final IOException e) {
            logger.warn("Failed to delete {}", dir, e);
        }
    }

    protected Path getJarFile(final Artifact artifact) {
        final Path jarPath = ResourceUtil.getPluginPath(artifact.getFileName());
        if (!Files.exists(jarPath)) {
            throw new ThemeException(artifact.getFileName() + " does not exist.");
        }
        return jarPath;
    }

        return getPath("WEB-INF/", "thumbnails", names);
    }

    public static Path getSitePath(final String... names) {
        return getPath("WEB-INF/", "site", names);
    }

    public static Path getPluginPath(final String... names) {
        return getPath("WEB-INF/", "plugin", names);
    }

    public static Path getProjectPropertiesFile() {
        return getPath("WEB-INF/", StringUtil.EMPTY, "project.properties");