}
                }
                ftpClientQueue.offer(client);
                throw new ChildUrlsException(requestDataSet, this.getClass().getName() + "#getResponseData");
            }

            final FTPFile[] files = client.listFiles(null, FTPFileFilters.NON_NULL);
            validateRequest(client);
            for (final FTPFile f : files) {

     */
    @PostConstruct
    public void init() {
        if (logger.isDebugEnabled()) {
            logger.debug("Initializing {}", this.getClass().getSimpleName());
        }
        ComponentUtil.getSsoManager().register(this);
    }

    /**
     * Gets or creates the SPNEGO authenticator instance.
     *

                // NOTE: There's java.nio.charset.MalformedInputException and sun.io.MalformedInputException
                if (e.getClass().getName().endsWith("MalformedInputException")) {
                    msg = "Some input bytes do not match the file encoding.";
                } else {
                    msg = e.getClass().getSimpleName();
                }
            }

                        }
                    }
                }
                throw new ChildUrlsException(requestDataSet, this.getClass().getName() + "#getResponseData");
            } else {
                responseData.setHttpStatusCode(Constants.NOT_FOUND_STATUS_CODE);
                responseData.setCharSet(charset);

                    logger.error("Failed to process a data crawling: {}", dataConfig.getName(), e);
                    ComponentUtil.getComponent(FailureUrlService.class)
                            .store(dataConfig, e.getClass().getCanonicalName(), dataConfig.getConfigId() + ":" + dataConfig.getName(), e);
                } finally {
                    indexUpdateCallback.commit();
                    deleteOldDocs();
                }

     */
    @PostConstruct
    public void init() {
        if (logger.isDebugEnabled()) {
            logger.debug("Initializing {}", this.getClass().getSimpleName());
        }
        crawlingConfigCache = CacheBuilder.newBuilder().maximumSize(100).expireAfterWrite(10, TimeUnit.MINUTES).build();
    }

    /**

            } catch (RuntimeException e) {
                // Accept runtime exceptions that might be thrown due to closed state
                assertTrue(e.getMessage() != null, "Exception should have a message: " + e.getClass().getSimpleName());
            }

            try {
                digest.verify(data, 0, data.length, 0, response);
                // If no exception is thrown, verification should return false or handle gracefully

     *
     * @see jcifs.SmbTree#unwrap(java.lang.Class)
     */
    @SuppressWarnings("unchecked")
    @Override
    public <T extends SmbTree> T unwrap(final Class<T> type) {
        if (type.isAssignableFrom(this.getClass())) {
            return (T) this;
        }
        throw new ClassCastException();
    }

    /**
     * @param track
     * @return tree with increased usage count
     */

    URL getBaseUrl() throws IOException {
      // Find URL pointing to Finalizer.class file.
      String finalizerPath = FINALIZER_CLASS_NAME.replace('.', '/') + ".class";
      URL finalizerUrl = getClass().getClassLoader().getResource(finalizerPath);
      if (finalizerUrl == null) {
        throw new FileNotFoundException(finalizerPath);
      }

      // Find URL pointing to base of class path.

                .map(s -> clientFactory.getClient(s + ":" + url))//
                .orElseGet(() -> clientFactory.getClient(url));
        if (logger.isDebugEnabled()) {
            logger.debug("CrawlerClient: class={}", client.getClass().getCanonicalName());
        }
        return client;
    }

    /**
     * Parses client rule configuration string into a list of client name and pattern pairs.