if (StringUtil.isBlank(key) || StringUtil.isBlank(value)) {
            throw new CrawlerSystemException("key or value is null.");
        }

        featureMap.put(key, value);
    }

    /**
     * Adds a property to the extractor.
     *
     * @param key   the key of the property
     * @param value the value of the property
     */

        }
      }
    } finally {
      if (interrupted) {
        Thread.currentThread().interrupt();
      }
    }
  }

  /**
   * Invokes {@code queue.}{@link BlockingQueue#put(Object) put(element)} uninterruptibly.
   *
   * @throws ClassCastException if the class of the specified element prevents it from being added
   *     to the given queue

///

And then the `admin_email` setting would be set to `"******@****.***"`.

The `app_name` would be `"ChimichangApp"`.

And the `items_per_user` would keep its default value of `50`.

## Settings in another module { #settings-in-another-module }

            addFieldToSource(sourceMap, "name", name);
        }
        return sourceMap;
    }

    protected void addFieldToSource(Map<String, Object> sourceMap, String field, Object value) {
        sourceMap.put(field, value);
    }

    // ===================================================================================
    //                                                                      Basic Override

        taskRunner = taskRunner,
        connectionPool = pool,
        route = route,
        socket = Socket(),
        idleAtNs = idleAtNanos,
      )
    result.withLock { pool.put(result) }
    return result
  }

  fun newConnectionPool(
    taskRunner: TaskRunner = this.taskRunner,
    maxIdleConnections: Int = Int.MAX_VALUE,
    routePlanner: RoutePlanner? = null,

        final List<Map<String, String>> itemList = new ArrayList<>();
        for (final String name : dataStoreNames) {
            final Map<String, String> map = new HashMap<>();
            map.put(Constants.ITEM_LABEL, name);
            map.put(Constants.ITEM_VALUE, name);
            itemList.add(map);
        }
        RenderDataUtil.register(data, "handlerNameItems", itemList);
    }

            addFieldToSource(sourceMap, "value", value);
        }
        return sourceMap;
    }

    protected void addFieldToSource(Map<String, Object> sourceMap, String field, Object value) {
        sourceMap.put(field, value);
    }

    // ===================================================================================
    //                                                                      Basic Override

            addFieldToSource(sourceMap, "sessionId", sessionId);
        }
        return sourceMap;
    }

    protected void addFieldToSource(Map<String, Object> sourceMap, String field, Object value) {
        sourceMap.put(field, value);
    }

    // ===================================================================================
    //                                                                      Basic Override

            addFieldToSource(sourceMap, "value", value);
        }
        return sourceMap;
    }

    protected void addFieldToSource(Map<String, Object> sourceMap, String field, Object value) {
        sourceMap.put(field, value);
    }

    // ===================================================================================
    //                                                                      Basic Override

      Types.newParameterizedType(Map.class, String.class, String.class));

  public void run() throws Exception {
    Map<String, String> requestBody = new LinkedHashMap<>();
    requestBody.put("longUrl", "https://publicobject.com/2014/12/04/html-formatting-javadocs/");
    RequestBody jsonRequestBody = RequestBody.create(
        mapJsonAdapter.toJson(requestBody), MEDIA_TYPE_JSON);