READY,

    /** We haven't yet computed or have already returned the element. */
    NOT_READY,

    /** We have reached the end of the data and are finished. */
    DONE,

    /** We've suffered an exception and are kaput. */
    FAILED,
  }

  private @Nullable T next;

  /**

      // be a definite performance hit to those users.
      thrownReflectionFailure = reflectionFailure;
      helper = new SynchronizedAtomicHelper();
    }
    ATOMIC_HELPER = helper;
    // Log after all static init is finished; if an installed logger uses any Futures methods, it
    // shouldn't break in cases where reflection is missing/broken.
    if (thrownReflectionFailure != null) {

    assertFalse(singleCallListener.wasCalled());
    assertTrue(listenableFuture.isDone()); // We call AbstractFuture#set above.

    // #addListener() will run the listener immediately because the Future is
    // already finished (we explicitly set the result of it above).
    listenableFuture.addListener(singleCallListener, directExecutor());
    assertThat(listenableFuture.get()).isEqualTo(DATA1);

                        }
                    }
                }
            }
            if (suite.getParent() == null) {
                // per test task top level gradle test run suite finished
                if (getFailedTests().size() > 0) {
                    taskLogger.lifecycle("\nTests with failures:");
                    for (ErrorReportingTestListener.Descriptor failure : getFailedTests()) {

            }
            if (logNotificationTarget != null) {
                logNotificationTarget.flush();
            }
            destroyContainer();
        }

        logger.info("Finished SuggestCreator.");
        System.exit(exitCode);
    }

    private static void destroyContainer() {
        TimeoutManager.getInstance().stop();
        synchronized (SingletonLaContainerFactory.class) {

        String key = "test";
        crawlerStatsHelper.begin(key);
        crawlerStatsHelper.record(key, StatsAction.ACCESSED);
        crawlerStatsHelper.record(key, StatsAction.FINISHED);
        crawlerStatsHelper.done(key);

        String[] values = localLogMsg.get().split("\t");
        assertEquals(5, values.length);
        assertEquals("url:test", values[0]);

The first part of the function, before the `yield`, will be executed **before** the application starts.

And the part after the `yield` will be executed **after** the application has finished.

### Async Context Manager { #async-context-manager }

If you check, the function is decorated with an `@asynccontextmanager`.

That converts the function into something called an "**async context manager**".

    @Override
    public void run() {}
  }

  // The thread executing the task publishes itself to the superclass' reference and the thread
  // interrupting sets DONE when it has finished interrupting.
  private static final Runnable DONE = new DoNothingRunnable();
  private static final Runnable PARKED = new DoNothingRunnable();
  // Why 1000?  WHY NOT!
  private static final int MAX_BUSY_WAIT_SPINS = 1000;

		"}"^
		"[Net.ServicePointManager]::SecurityProtocol = [Net.SecurityProtocolType]::Tls12; $webclient.DownloadFile('%DOWNLOAD_URL%', '%WRAPPER_JAR%')"^
		"}"
    if "%MVNW_VERBOSE%" == "true" (
        echo Finished downloading %WRAPPER_JAR%
    )
)
@REM End of extension

@REM Provide a "standardized" way to retrieve the CLI args that will
@REM work with both Windows and non-Windows executions.
set MAVEN_CMD_LINE_ARGS=%*

    READY,

    /** We haven't yet computed or have already returned the element. */
    NOT_READY,

    /** We have reached the end of the data and are finished. */
    DONE,

    /** We've suffered an exception and are kaput. */
    FAILED,
  }

  private @Nullable T next;

  /**