/// warning

Extra keys passed to `Field` will also be present in the resulting OpenAPI schema for your application.
As these keys may not necessarily be part of the OpenAPI specification, some OpenAPI tools, for example [the OpenAPI validator](https://validator.swagger.io/), may not work with your generated schema.

///

## Recap { #recap }

 * @author Charles Fry
 * @since 10.0
 */
@GwtCompatible
@FunctionalInterface
public interface RemovalListener<K, V> {
  /**
   * Notifies the listener that a removal occurred at some point in the past.
   *
   * <p>This does not always signify that the key is now absent from the cache, as it may have
   * already been re-added.
   */

 * href="http://en.wikipedia.org/wiki/Decorator_pattern">decorator pattern</a>.
 *
 * <p><b>{@code default} method warning:</b> This class forwards calls to <i>only some</i> {@code
 * default} methods. Specifically, it forwards calls only for methods that existed <a
 * href="https://docs.oracle.com/javase/7/docs/api/java/util/Iterator.html">before {@code default}

     * setException() will be a no-op because the Future is already done.
     *
     * Both scenarios are bad: The output Future might never complete, or, if it does complete, it
     * might not run some of its listeners. The likely result is that the app will hang. (And of
     * course stack overflows are bad news in general. For example, we may have overflowed in the

  @Param({"1000", "2000"})
  int maximumSize;

  @Param("5000")
  int distinctKeys;

  @Param("4")
  int segments;

  // 1 means uniform likelihood of keys; higher means some keys are more popular
  // tweak this to control hit rate
  @Param("2.5")
  double concentration;

  Random random = new Random();

  LoadingCache<Integer, Integer> cache;

  int max;

 * href="http://en.wikipedia.org/wiki/Decorator_pattern">decorator pattern</a>.
 *
 * <p><b>{@code default} method warning:</b> This class forwards calls to <i>only some</i> {@code
 * default} methods. Specifically, it forwards calls only for methods that existed <a
 * href="https://docs.oracle.com/javase/7/docs/api/java/util/ListIterator.html">before {@code

 * href="http://en.wikipedia.org/wiki/Decorator_pattern">decorator pattern</a>.
 *
 * <p><b>{@code default} method warning:</b> This class forwards calls to <i>only some</i> {@code
 * default} methods. Specifically, it forwards calls only for methods that existed <a
 * href="https://docs.oracle.com/javase/7/docs/api/java/util/concurrent/ConcurrentMap.html">before

            assertTrue(executor.awaitTermination(5, TimeUnit.SECONDS));

            // Some operations might succeed before key wipe, some might fail after
            // At minimum, we expect some activity (not all operations should be no-ops)
            int totalOperations = successCount.get() + failureCount.get();
            assertTrue(totalOperations > 0, "Some signing/verification operations should have been attempted");
        }

    public void test_getUsedMemory_variations() {
        // Test multiple calls to ensure consistency
        long memory1 = MemoryUtil.getUsedMemory();
        assertTrue(memory1 >= 0);

        // Create some objects to change memory usage
        @SuppressWarnings("unused")
        String[] largeArray = new String[1000];
        for (int i = 0; i < 1000; i++) {
            largeArray[i] = "test" + i;
        }

    // Check that this thread has been marked as interrupted again now that the thread has been
    // returned by SequentialExecutor. Clear the bit while checking so that the test doesn't hose
    // JUnit or some other test case.
    assertThat(Thread.interrupted()).isTrue();
  }

  public void testInterrupt_doesNotInterruptSubsequentTask() throws Exception {
    // Run a task that interrupts its thread (i.e. this thread).