* ValueReference instance.
     */
    boolean isLoading();

    /**
     * Returns true if this reference contains an active value, meaning one that is still considered
     * present in the cache. Active values consist of live values, which are returned by cache
     * lookups, and dead values, which have been evicted but awaiting removal. Non-active values

     * ValueReference instance.
     */
    boolean isLoading();

    /**
     * Returns true if this reference contains an active value, meaning one that is still considered
     * present in the cache. Active values consist of live values, which are returned by cache
     * lookups, and dead values, which have been evicted but awaiting removal. Non-active values

    assertEquals(0, listener.getCount());
    table.set(0, entryTwo);
    assertFalse(segment.reclaimKey(entryThree, hashThree));
    assertEquals(0, listener.getCount());

    // present
    table.set(0, entryOne);
    segment.count = 1;
    assertTrue(segment.reclaimKey(entryOne, hashOne));
    assertEquals(1, listener.getCount());
    assertSame(keyOne, listener.getLastEvictedKey());

    assertEquals(0, listener.getCount());
    table.set(0, entryTwo);
    assertFalse(segment.reclaimKey(entryThree, hashThree));
    assertEquals(0, listener.getCount());

    // present
    table.set(0, entryOne);
    segment.count = 1;
    assertTrue(segment.reclaimKey(entryOne, hashOne));
    assertEquals(1, listener.getCount());
    assertSame(keyOne, listener.getLastEvictedKey());

    // doesn't catch Errors and we cannot depend on the order that our
    // transformations run. (So it is possible that the Error being thrown
    // could prevent our second transformations from running).
    SettableFuture<Integer> exceptionInput = SettableFuture.create();
    ListenableFuture<Integer> exceptionComposedFuture =

    // doesn't catch Errors and we cannot depend on the order that our
    // transformations run. (So it is possible that the Error being thrown
    // could prevent our second transformations from running).
    SettableFuture<Integer> exceptionInput = SettableFuture.create();
    ListenableFuture<Integer> exceptionComposedFuture =

      return convert(bimap.inverse(), b);
    }

    private static <X, Y> Y convert(BiMap<X, Y> bimap, X input) {
      Y output = bimap.get(input);
      checkArgument(output != null, "No non-null mapping present for input: %s", input);
      return output;
    }

    @Override
    public boolean equals(@CheckForNull Object object) {
      if (object instanceof BiMapConverter) {