directExecutor());
    return future;
  }

  /**
   * Returns a default thread factory used to create new threads.
   *
   * <p>When running on AppEngine with access to <a
   * href="https://cloud.google.com/appengine/docs/standard/java/javadoc/">AppEngine legacy
   * APIs</a>, this method returns {@code ThreadManager.currentRequestThreadFactory()}. Otherwise,
   * it returns {@link Executors#defaultThreadFactory()}.
   *

  @CheckForNull
  private static final Method getStackTraceDepthMethod = (jla == null) ? null : getSizeMethod(jla);

  /**
   * Returns the JavaLangAccess class that is present in all Sun JDKs. It is not allowed in
   * AppEngine, and not present in non-Sun JDKs.
   */
  @SuppressWarnings("removal") // b/318391980
  @J2ktIncompatible
  @GwtIncompatible // java.lang.reflect
  @CheckForNull
  private static Object getJLA() {
    try {

  @CheckForNull
  private static final Method getStackTraceDepthMethod = (jla == null) ? null : getSizeMethod(jla);

  /**
   * Returns the JavaLangAccess class that is present in all Sun JDKs. It is not allowed in
   * AppEngine, and not present in non-Sun JDKs.
   */
  @SuppressWarnings("removal") // b/318391980
  @J2ktIncompatible
  @GwtIncompatible // java.lang.reflect
  @CheckForNull
  private static Object getJLA() {
    try {

ap-southeast-2.elasticbeanstalk.com ap.gov.br ap.gov.pl ap.it ap.leg.br aparecida.br apartments api.gov.uk api.stdlib.com apigee.io app app.banzaicloud.io app.br app.gp app.lmpm.com app.os.fedoraproject.org app.os.stg.fedoraproject.org app.render.com appchizi.com appengine.flow.ch apple applinzi.com apps.fbsbx.com apps.lair.io appspacehosted.com appspaceusercontent.com appspot.com appudo.net aq aq.it aquarelle aquarium.museum aquila.it ar ar.com ar.it ar.us arab arai.shizuoka.jp arakawa.saitama.jp arakawa.tokyo.jp...