@Volatile private var canceled = false

  override fun onResponse(
    call: Call,
    response: Response,
  ) {
    processResponse(response)
  }

  internal fun processResponse(response: Response) {
    response.use {
      if (!response.isSuccessful) {
        listener.onFailure(this, null, response)
        return
      }

  /** Initialized in [callStart]. */
  private var callStackTrace: Any? = null

  /** Finds an exchange to send the next request and receive the next response. */
  private var exchangeFinder: ExchangeFinder? = null

  var connection: RealConnection? = null
    private set
  private var timeoutEarlyExit = false

  /**

```

### Type Conversion
```java
import org.codelibs.core.convert.*;

// Safe type conversions with null handling
Integer value = IntegerConversionUtil.toInteger("123");        // Returns 123
Integer nullValue = IntegerConversionUtil.toInteger(null);     // Returns null
Boolean flag = BooleanConversionUtil.toBoolean("true");        // Returns true
Date date = DateConversionUtil.toDate("2023-12-25", "yyyy-MM-dd");

            @Throws(IOException::class)
            override fun authenticate(route: Route?, response: Response): Request? {
              if (response.request.header("Authorization") != null) {
                return null // Give up, we've already attempted to authenticate.
              }

              println("Authenticating for response: $response")
              println("Challenges: ${response.challenges()}")

	<modelVersion>4.0.0</modelVersion>
	<artifactId>fess</artifactId>
	<version>15.2.1-SNAPSHOT</version>
	<packaging>war</packaging>
	<name>Fess</name>
	<description>Fess is Full tExt Search System.</description>
	<url>https://fess.codelibs.org/</url>
	<inceptionYear>2009</inceptionYear>
	<licenses>
		<license>
			<name>The Apache Software License, Version 2.0</name>

        final String requestsPerSecond = getReindexRequestsPerSecound(fessConfig);
        final String scroll = StringUtil.isNotBlank(fessConfig.getIndexReindexScroll()) ? fessConfig.getIndexReindexScroll() : null;
        final String maxDocs = StringUtil.isNotBlank(fessConfig.getIndexReindexMaxDocs()) ? fessConfig.getIndexReindexMaxDocs() : null;

    if (bufferSize > k) {
      Arrays.fill(buffer, k, buffer.length, null);
      bufferSize = k;
      threshold = buffer[k - 1];
    }
    // Up to bufferSize, all elements of buffer are real Ts (not null unless T includes null)
    T[] topK = Arrays.copyOf(castBuffer, bufferSize);
    // we have to support null elements, so no ImmutableList for us
    return unmodifiableList(asList(topK));
  }

   * control this will return null. If there is more than a single task ready to execute immediately
   * this will start another thread to handle that work.
   */
  fun awaitTaskToRun(): Task? {
    assertLockHeld()

    while (true) {
      if (readyQueues.isEmpty()) {
        return null // Nothing to do.
      }

      val now = backend.nanoTime()

    }

    public void test_inherited_methods_from_monitor_target() throws Exception {
        // Test that inherited methods are accessible
        Method appendMethod = null;
        Method appendTimestampMethod = null;
        Method appendExceptionMethod = null;

        // These are protected methods in MonitorTarget
        Method[] methods = MonitorTarget.class.getDeclaredMethods();
        for (Method method : methods) {

      @Nullable Type ownerType, Class<?> rawType, Type... arguments) {
    if (ownerType == null) {
      return newParameterizedType(rawType, arguments);
    }
    // ParameterizedTypeImpl constructor already checks, but we want to throw NPE before IAE
    checkNotNull(arguments);
    checkArgument(rawType.getEnclosingClass() != null, "Owner type for unenclosed %s", rawType);
    return new ParameterizedTypeImpl(ownerType, rawType, arguments);