// test without that cast to verify that using the raw Comparable works outside J2KT.
  @J2ktIncompatible // J2KT's translation of raw Comparable is not a supertype of Int translation
  public void testCreation_expectedSize() {
    MinMaxPriorityQueue<Integer> queue = MinMaxPriorityQueue.expectedSize(8).create();
    assertEquals(8, queue.capacity());

import java.io.Writer;
import java.util.Arrays;
import java.util.Objects;
import javax.annotation.CheckForNull;
import org.checkerframework.checker.nullness.qual.Nullable;

/**
 * A binary encoding scheme for reversibly translating between byte sequences and printable ASCII
 * strings. This class includes several constants for encoding schemes specified by <a
 * href="http://tools.ietf.org/html/rfc4648">RFC 4648</a>. For example, the expression:
 *

 * were never supposed to be seen on the wire. That assumption was dropped, some say mistakenly, in
 * later RFCs with the apparent aim of making IPv4-to-IPv6 transition simpler.
 *
 * <p>Technically one <i>can</i> create a 128bit IPv6 address with the wire format of a "mapped"
 * address, as shown above, and transmit it in an IPv6 packet header. However, Java's InetAddress

   * future, when this class requires Java 8, this method will be deprecated. See {@link Function}
   * for more important information about the Java 8+ transition.
   */
  public static Function<Object, String> toStringFunction() {
    return ToStringFunction.INSTANCE;
  }

  // enum singleton pattern
  private enum ToStringFunction implements Function<Object, String> {

  // test without that cast to verify that using the raw Comparable works outside J2KT.
  @J2ktIncompatible // J2KT's translation of raw Comparable is not a supertype of Int translation
  public void testCreation_expectedSize() {
    MinMaxPriorityQueue<Integer> queue = MinMaxPriorityQueue.expectedSize(8).create();
    assertEquals(8, queue.capacity());

   * future, when this class requires Java 8, this method will be deprecated. See {@link Function}
   * for more important information about the Java 8+ transition.
   */
  public static Function<Object, String> toStringFunction() {
    return ToStringFunction.INSTANCE;
  }

  // enum singleton pattern
  private enum ToStringFunction implements Function<Object, String> {

  /** Constructor for use by subclasses. */
  protected AbstractScheduledService() {}

  /**
   * Run one iteration of the scheduled task. If any invocation of this method throws an exception,
   * the service will transition to the {@link Service.State#FAILED} state and this method will no
   * longer be called.
   */
  protected abstract void runOneIteration() throws Exception;

  /**
   * Start the service.
   *

     * correctly installed
     *
     * <p>{@link #transitioned}: is set by {@link #transitionService} to indicate that some
     * transition has been performed.
     *
     * <p>Together, they allow us to enforce that all services have their listeners installed prior
     * to any service performing a transition, then we can fail in the ServiceManager constructor
     * rather than in a Service.Listener callback.
     */

 *         .transformAsync((closer, transaction) -> transaction.queryClosingFuture("..."), executor)
 *         .transform((closer, result) -> result.get("userName"), directExecutor())
 *         .catching(DBException.class, e -> "no user", directExecutor())
 *         .finishToFuture();
 * }</pre>
 *
 * In this example, when the {@code userName} {@link Future} is done, the transaction and the query