}
    ```
=== ":material-language-java: Java"
    ```java
      public static final MediaType MEDIA_TYPE_MARKDOWN
          = MediaType.parse("text/x-markdown; charset=utf-8");

      private final OkHttpClient client = new OkHttpClient();

      public void run() throws Exception {
        String postBody = ""
            + "Releases\n"

            System.setProperty("fess.version", version);
            System.setProperty("fess.product.version", productVersion);
        } catch (final Exception e) {
            throw new FessSystemException("Failed to parse project.properties.", e);
        }
    }

    /**
     * Destroys the SystemHelper and executes shutdown hooks.
     */
    @PreDestroy
    public void destroy() {

                                }
                            }
                        } catch (final Exception e) {
                            logger.warn("Failed to parse {}", dataPath, e);
                        }
                        return StringUtil.EMPTY;
                    });
            final BulkResponse response = builder.execute().actionGet(fessConfig.getIndexBulkTimeout());