findShadowRoot = element => {\n  if (!document.documentElement.attachShadow) {\n    return null\n  }\n\n  // Can find the shadow root otherwise it'll return the document\n  if (typeof element.getRootNode === 'function') {\n    const root = element.getRootNode()\n    return root instanceof ShadowRoot ? root : null\n  }\n\n  if (element instanceof ShadowRoot) {\n    return element\n  }\n\n  // when we don't find a shadow root\n  if (!element.parentNode) {\n    return null\n  }\n\n  return findShadowRoot(elemen...

                if (StringUtil.isBlank(userAgent)) {
                    return false;
                }

                return pathMapping.getUAMatcher(userAgent).find();
            }).orElse(false);
        }
        return false;
    }

  private boolean allBmp(String string) {
    // Ordinarily we'd use something like i += Character.charCount(string.codePointAt(i)) here. But
    // we can get away with i++ because the whole point of this method is to return false if we find
    // a code point that doesn't fit in a char.
    for (int i = 0; i < string.length(); i++) {
      if (string.codePointAt(i) > 0xffff) {
        return false;
      }
    }
    return true;
  }

  ) {
    logEvent(ConnectionEvent.ConnectionAcquired(System.nanoTime(), connection, call))
  }

  override fun connectionReleased(
    connection: Connection,
    call: Call,
  ) {
    if (eventSequence.find { it is ConnectionEvent.ConnectStart && it.connection == connection } != null && connection is RealConnection) {
      if (connection.noNewExchanges) {
        assertThat(eventSequence).matchesPredicate { deque ->

    }

    public boolean isActive() {
        return active;
    }

    public void enable() {
        active = true;

        // TODO if it was null, we really need to go find them now... or is this taken care of by the ordering?
        if (children != null) {
            for (ResolutionNode node : children) {
                node.enable();
            }
        }
    }

* You can then further modify the `response` before returning it.

{* ../../docs_src/middleware/tutorial001.py hl[8:9,11,14] *}

/// tip

Keep in mind that custom proprietary headers can be added <a href="https://developer.mozilla.org/en-US/docs/Web/HTTP/Headers" class="external-link" target="_blank">using the 'X-' prefix</a>.

## Code size { #code-size }

This example might seem verbose. Keep in mind that we are mixing security, data models, utility functions and *path operations* in the same file.

But here's the key point.

The security and dependency injection stuff is written once.

 * by individual libraries that provide specialized support for particular use cases.
 *
 * <p>Disadvantages of EventBus include:
 *
 * <ul>
 *   <li>It makes the cross-references between producer and subscriber harder to find. This can
 *       complicate debugging, lead to unintentional reentrant calls, and force apps to eagerly
 *       initialize all possible subscribers at startup time.

elif [ -r "$FESS_INCLUDE" ]; then
    . "$FESS_INCLUDE"
fi

if [ -x "$JAVA_HOME/bin/java" ]; then
    JAVA="$JAVA_HOME/bin/java"
else
    JAVA=`which java`
fi

if [ ! -x "$JAVA" ]; then
    echo "Could not find any executable java binary. Please install java in your PATH or set JAVA_HOME"
    exit 1
fi

if [ -z "$FESS_CLASSPATH" ]; then
    echo "You must set the FESS_CLASSPATH var" >&2
    exit 1
fi

        // 1.8, 9, 10, 11, 12 etc
        val version = jvmVersion.toInt()
        if (version >= 9) return null
      } catch (_: NumberFormatException) {
        // expected on >= JDK 9
      }

      // Find Jetty's ALPN extension for OpenJDK.
      try {
        val alpnClassName = "org.eclipse.jetty.alpn.ALPN"
        val alpnClass = Class.forName(alpnClassName, true, null)