* byte read.
   */
  @Override
  @CanIgnoreReturnValue
  public int read() throws IOException {
    int b = in.read();
    if (b != -1) {
      hasher.putByte((byte) b);
    }
    return b;
  }

  /**
   * Reads the specified bytes of data from the underlying input stream and updates the hasher with
   * the bytes read.
   */

      },
      "expiredTime": {
        "type": "long"
      },
      "createdBy": {
        "type": "keyword"
      },
      "createdTime": {
        "type": "long"
      },
      "updatedBy": {
        "type": "keyword"
      },
      "updatedTime": {
        "type": "long"
      }
    }

            "type" : "keyword"
          },
          "targetLabel" : {
            "type" : "keyword"
          },
          "targetRole" : {
            "type" : "keyword"
          },
          "updatedBy" : {
            "type" : "keyword"
          },
          "updatedTime" : {
            "type" : "long"
          }
        }
      }
    },
    "settings" : {
      "index" : {

            "type" : "keyword"
          },
          "createdTime" : {
            "type" : "long"
          },
          "name" : {
            "type" : "keyword"
          },
          "updatedBy" : {
            "type" : "keyword"
          },
          "updatedTime" : {
            "type" : "long"
          },
          "value" : {
            "type" : "keyword"
          },

            "type" : "keyword"
          },
          "permissions" : {
            "type" : "keyword"
          },
          "sortOrder" : {
            "type" : "integer"
          },
          "updatedBy" : {
            "type" : "keyword"
          },
          "updatedTime" : {
            "type" : "long"
          },
          "virtualHosts" : {
            "type" : "keyword"
          }
        }

                + ", createdBy=" + createdBy + ", createdTime=" + createdTime + ", reading=" + reading + ", suggestWord=" + suggestWord
                + ", updatedBy=" + updatedBy + ", updatedTime=" + updatedTime + ", docMeta=" + docMeta + "]";
    }

            "type" : "keyword"
          },
          "port" : {
            "type" : "integer"
          },
          "protocolScheme" : {
            "type" : "keyword"
          },
          "updatedBy" : {
            "type" : "keyword"
          },
          "updatedTime" : {
            "type" : "long"
          },
          "username" : {
            "type" : "keyword"
          }
        }
      }

    /** The key of the message: Sort Order */
    public static final String LABELS_SORT_ORDER = "{labels.sortOrder}";

    /** The key of the message: Updated By */
    public static final String LABELS_UPDATED_BY = "{labels.updatedBy}";

    /** The key of the message: Updated Time */
    public static final String LABELS_UPDATED_TIME = "{labels.updatedTime}";

    /** The key of the message: URLs */

        configHelper.setLoadCallback(() -> {
            latch.countDown();
            return 1;
        });

        configHelper.update();
        configHelper.update();
        configHelper.update();

        assertTrue("All load methods should be called within 5 seconds", latch.await(5, TimeUnit.SECONDS));
        assertEquals(3, configHelper.getLoadCallCount());
    }

            "type" : "keyword"
          },
          "permissions" : {
            "type" : "keyword"
          },
          "sortOrder" : {
            "type" : "integer"
          },
          "updatedBy" : {
            "type" : "keyword"
          },
          "updatedTime" : {
            "type" : "long"
          },
          "value" : {
            "type" : "keyword"
          },