* <li><code>[1.0,2.0]</code> Versions 1.0 to 2.0 (both included)</li>
     * <li><code>[1.5,)</code> Versions 1.5 and higher</li>
     * <li><code>(,1.0],[1.2,)</code> Versions up to 1.0 (included) and 1.2 or higher</li>
     * </ul>
     *
     * @param spec string representation of a version or version range
     * @return a new {@link VersionRange} object that represents the spec

        // Failed channel should have zero score
        channelInfo.setState(ChannelState.FAILED);
        assertEquals(0, channelInfo.getScore());

        // Primary channel should have higher score
        channelInfo.setState(ChannelState.ESTABLISHED);
        channelInfo.setPrimary(true);
        int primaryScore = channelInfo.getScore();
        assertTrue(primaryScore > baseScore);

* `http`: Standard-HTTP-Authentifizierungssysteme, einschließlich:
    * `bearer`: ein Header `Authorization` mit dem Wert `Bearer` plus einem Token. Dies wird von OAuth2 geerbt.
    * HTTP Basic Authentication.
    * HTTP Digest, usw.
* `oauth2`: Alle OAuth2-Methoden zum Umgang mit Sicherheit (genannt „Flows“).
    * Mehrere dieser Flows eignen sich zum Aufbau eines OAuth 2.0-Authentifizierungsanbieters (wie Google, Facebook, X (Twitter), GitHub usw.):

| :--        | :--      |
| *Type*     | *String* |
| *Required* | *Yes*    |

### DurationSeconds

The duration, in seconds. The value can range from 900 seconds (15 minutes) up to 365 days. If value is higher than this setting, then operation fails. By default, the value is set to 3600 seconds. If no *DurationSeconds* is specified expiry seconds is obtained from *Token*.

| Params        | Value                                              |

    * A cookie.
* `http`: standard HTTP authentication systems, including:
    * `bearer`: a header `Authorization` with a value of `Bearer ` plus a token. This is inherited from OAuth2.
    * HTTP Basic authentication.
    * HTTP Digest, etc.
* `oauth2`: all the OAuth2 ways to handle security (called "flows").
    * Several of these flows are appropriate for building an OAuth 2.0 authentication provider (like Google, Facebook, X (Twitter), GitHub, etc):

      },
      "timestamp": {
        "type": "date",
        "format": "date_optional_time"
      },
      "expires": {
        "type": "date",
        "format": "date_optional_time"
      },
      "digest": {
        "type": "text",
        "index": false
      },
      "doc_id": {
        "type": "keyword"
      },
      "favorite_count": {
        "type": "long"
      },
      "filename": {

    }

    @Override
    public @Nullable E ceiling(@ParametricNullness E e) {
      return getElementOrNull(multiset().tailMultiset(e, CLOSED).firstEntry());
    }

    @Override
    public @Nullable E higher(@ParametricNullness E e) {
      return getElementOrNull(multiset().tailMultiset(e, OPEN).firstEntry());
    }

    @Override
    public NavigableSet<E> descendingSet() {

        when(mockChannelManager.getHealthyChannels()).thenReturn(Arrays.asList(channel1, channel2));

        ChannelInfo selected = loadBalancer.selectChannel(largeRead);
        // Should prefer higher bandwidth channel for large transfers
        assertEquals(channel2, selected);
    }

    @Test
    void testAdaptiveStrategyMetadataOperation() throws Exception {

* `http`: padrão HTTP de sistemas autenticação, incluindo:
    * `bearer`: um header de `Authorization` com valor de `Bearer` adicionado de um token. Isso é herança do OAuth2.
    * HTTP Basic authentication.
    * HTTP Digest, etc.
* `oauth2`: todas as formas do OAuth2 para lidar com segurança (chamados "fluxos").
    * Vários desses fluxos são apropriados para construir um provedor de autenticação OAuth2 (como Google, Facebook, X (Twitter), GitHub, etc):

                    return "alerts,roles";

                case FessConfig.INDEX_FIELD_CACHE:
                    return "cache";
                case FessConfig.INDEX_FIELD_DIGEST:
                    return "digest";
                case FessConfig.INDEX_FIELD_HOST:
                    return "host";
                case FessConfig.INDEX_FIELD_SITE:
                    return "site";