* AsyncFunction.apply}. Any heavyweight operations should occur in other threads responsible for
   * completing the returned {@code Future}.)
   *
   * <p>The returned {@code Future} attempts to keep its cancellation state in sync with that of the
   * input future and that of the future returned by the chain function. That is, if the returned

        this.runnable = runnable;
        this.executor = executor;
        this.next = next;
      }
    }
  }

  // A version of the ExecutionList that uses an explicit tail pointer to keep the nodes in order
  // rather than flipping the stack in execute().
  private static final class NewExecutionListQueue {
    static final Logger log = Logger.getLogger(NewExecutionListQueue.class.getName());

      protected @Nullable C computeNext() {
        while (merged.hasNext()) {
          C next = merged.next();
          boolean duplicate = lastValue != null && comparator.compare(next, lastValue) == 0;

          // Keep looping till we find a non-duplicate value.
          if (!duplicate) {
            lastValue = next;
            return lastValue;
          }
        }

        } catch (Exception e) {
            assertTrue("Exception handling should be fast", true);
        }
    }

    public void test_setCrawlingExecutionInterval() {
        long interval = 100L; // Keep test intervals short
        dataIndexHelper.setCrawlingExecutionInterval(interval);

        try {
            Field field = DataIndexHelper.class.getDeclaredField("crawlingExecutionInterval");

     * 13.5.1.
     */
    private fun isEndToEnd(fieldName: String): Boolean =
      !"Connection".equals(fieldName, ignoreCase = true) &&
        !"Keep-Alive".equals(fieldName, ignoreCase = true) &&
        !"Proxy-Authenticate".equals(fieldName, ignoreCase = true) &&
        !"Proxy-Authorization".equals(fieldName, ignoreCase = true) &&

        dataMap.put("url", "http://example.com/test");
        dataMap.put("doc_id", "existing-doc-id");

        indexUpdateCallback.store(paramMap, dataMap);

        // Should keep existing doc_id
        assertEquals("existing-doc-id", dataMap.get("doc_id"));
    }

    public void test_concurrentStore() throws Exception {
        // Test thread safety
        final int threadCount = 10;

      private val out: Buffer,
    ) {
      /**
       * In the scenario where the dynamic table size changes multiple times between transmission of
       * header blocks, we need to keep track of the smallest value in that interval.
       */
      private var smallestHeaderTableSizeSetting = Integer.MAX_VALUE
      private var emitDynamicTableSizeUpdate: Boolean = false

      Request
        .Builder()
        .url(route.address.url)
        .method("CONNECT", null)
        .header("Host", route.address.url.toHostHeader(includeDefaultPort = true))
        .header("Proxy-Connection", "Keep-Alive") // For HTTP/1.0 proxies like Squid.
        .header("User-Agent", USER_AGENT)
        .build()

    val fakeAuthChallengeResponse =
      Response
        .Builder()
        .request(proxyConnectRequest)

        // Return just the base; caller is responsible for placing ctx at the correct absolute offset.
        // We will return a composite buffer from the test when building the full packet.
        // To keep this helper simple, return base and let the caller append/pad and inject ctx.
        return base;
    }

    /**
     * Build a full SMB2 packet combining header and provided body, optionally injecting context bytes.

## Self-hosting JavaScript and CSS for docs { #self-hosting-javascript-and-css-for-docs }

Self-hosting the JavaScript and CSS could be useful if, for example, you need your app to keep working even while offline, without open Internet access, or in a local network.

Here you'll see how to serve those files yourself, in the same FastAPI app, and configure the docs to use them.