repeated in a wondering tone.

  `Why, what are YOUR shoes done with?' said the Gryphon.  `I
mean, what makes them so shiny?'

  Alice looked down at them, and considered a little before she
gave her answer.  `They're done with blacking, I believe.'

  `Boots and shoes under the sea,' the Gryphon went on in a deep
voice, `are done with a whiting.  Now you know.'

  `And what are they made of?' Alice asked in a tone of great

    /*
     * Segments maintain a table of entry lists that are ALWAYS kept in a consistent state, so can
     * be read without locking. Next fields of nodes are immutable (final). All list additions are
     * performed at the front of each bin. This makes it easy to check changes, and also fast to
     * traverse. When nodes would otherwise be changed, new nodes are created to replace them. This

    assertTrue(future2.set(2L));
    // Second check to ensure the input future was not cancelled
    assertEquals((Long) 2L, getDone(future2));

    // All futures are now complete; outstanding inputs are cancelled
    assertTrue(future3.isCancelled());
    assertTrue(future3.wasInterrupted());
  }

  @AndroidIncompatible // runs out of memory under some versions of the emulator

    assertTrue(future2.set(2L));
    // Second check to ensure the input future was not cancelled
    assertEquals((Long) 2L, getDone(future2));

    // All futures are now complete; outstanding inputs are cancelled
    assertTrue(future3.isCancelled());
    assertTrue(future3.wasInterrupted());
  }

  @AndroidIncompatible // runs out of memory under some versions of the emulator

    suite.addTest(
        ConcurrentMapTestSuiteBuilder.using(
                new TestStringCacheGenerator(createCacheBuilder().weakKeys()))
            .named("LocalCache with weakKeys") // keys are string literals and won't be GC'd
            .withFeatures(
                CollectionSize.ANY,
                MapFeature.GENERAL_PURPOSE,
                CollectionFeature.SUPPORTS_ITERATOR_REMOVE)

    suite.addTest(
        ConcurrentMapTestSuiteBuilder.using(
                new TestStringCacheGenerator(createCacheBuilder().weakKeys()))
            .named("LocalCache with weakKeys") // keys are string literals and won't be GC'd
            .withFeatures(
                CollectionSize.ANY,
                MapFeature.GENERAL_PURPOSE,
                CollectionFeature.SUPPORTS_ITERATOR_REMOVE)

   * and values are the result of applying the provided mapping functions to the input elements. The
   * resulting implementation is specialized for enum key types. The returned map and its views will
   * iterate over keys in their enum definition order, not encounter order.
   *
   * <p>If the mapped keys contain duplicates, the values are merged using the specified merging
   * function.
   *

repeated in a wondering tone.

  `Why, what are YOUR shoes done with?' said the Gryphon.  `I
mean, what makes them so shiny?'

  Alice looked down at them, and considered a little before she
gave her answer.  `They're done with blacking, I believe.'

  `Boots and shoes under the sea,' the Gryphon went on in a deep
voice, `are done with a whiting.  Now you know.'

  `And what are they made of?' Alice asked in a tone of great

import org.checkerframework.checker.nullness.qual.Nullable;

/**
 * A step in a pipeline of an asynchronous computation. When the last step in the computation is
 * complete, some objects captured during the computation are closed.
 *
 * <p>A pipeline of {@code ClosingFuture}s is a tree of steps. Each step represents either an
 * asynchronously-computed intermediate value, or else an exception that indicates the failure or

    /*
     * Segments maintain a table of entry lists that are ALWAYS kept in a consistent state, so can
     * be read without locking. Next fields of nodes are immutable (final). All list additions are
     * performed at the front of each bin. This makes it easy to check changes, and also fast to
     * traverse. When nodes would otherwise be changed, new nodes are created to replace them. This