/** Default cron expression for search log processing (every minute). */
    public static final String DEFAULT_SEARCH_LOG_CRON_EXPRESSION = "* * * * *";

    /** Default cron expression for daily tasks (daily at midnight). */
    public static final String DEFAULT_DAILY_CRON_EXPRESSION = "0 0 * * *";

    /** Default cron expression for hourly tasks (every hour). */

          throw new AssertionFailedError("You weren't supposed to actually invoke me!");
        }
      };

  public void testAnyAndNone_logicalOps() throws Exception {
    // These are testing behavior that's never promised by the API, but since
    // we're lucky enough that these do pass, it saves us from having to write
    // more excruciating tests! Hooray!

    assertSame(CharMatcher.any(), CharMatcher.none().negate());

</p>
<p align="center">
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    <img src="https://github.com/fastapi/fastapi/actions/workflows/test.yml/badge.svg?event=push&branch=master" alt="Test">
</a>
<a href="https://coverage-badge.samuelcolvin.workers.dev/redirect/fastapi/fastapi" target="_blank">

</p>
<p align="center">
<a href="https://github.com/fastapi/fastapi/actions?query=workflow%3ATest+event%3Apush+branch%3Amaster" target="_blank">
    <img src="https://github.com/fastapi/fastapi/actions/workflows/test.yml/badge.svg?event=push&branch=master" alt="Test">
</a>
<a href="https://coverage-badge.samuelcolvin.workers.dev/redirect/fastapi/fastapi" target="_blank">

OAuth2 with scopes is the mechanism used by many big authentication providers, like Facebook, Google, GitHub, Microsoft, X (Twitter), etc. They use it to provide specific permissions to users and applications.

Every time you "log in with" Facebook, Google, GitHub, Microsoft, X (Twitter), that application is using OAuth2 with scopes.

	}
}

// MetricFQN - returns the fully qualified name for the given metric name.
func (mg *MetricsGroup) MetricFQN(name MetricName) string {
	v, ok := mg.descriptorMap[name]
	if !ok {
		// This should never happen.
		return ""
	}
	return v.toPromName(mg.CollectorPath.metricPrefix())
}

func (mg *MetricsGroup) validate() {
	if len(mg.Descriptors) == 0 {
		panic("Descriptors must be set")
	}

    @SuppressWarnings("UnnecessaryLambda") // Must be a fixed singleton object
    private static final Supplier<@Nullable Void> SUCCESSFULLY_COMPUTED =
        () -> {
          throw new IllegalStateException(); // Should never get called.
        };

    private volatile Supplier<T> delegate;
    // "value" does not need to be volatile; visibility piggy-backs on volatile read of "delegate".
    private @Nullable T value;

 * than {@code size()}. Furthermore, this structure only depends on a fixed number of arrays; {@code
 * add(x)} operations <i>do not</i> create objects for the garbage collector to deal with, and for
 * every element added, the garbage collector will have to traverse {@code 1.5} references on
 * average, in the marking phase, not {@code 5.0} as in {@code java.util.HashSet}.
 *

   * @return an array containing all of the elements in this queue
   * @throws ArrayStoreException if the runtime type of the specified array is not a supertype of
   *     the runtime type of every element in this queue
   * @throws NullPointerException if the specified array is null
   */
  @CanIgnoreReturnValue
  @Override
  public <T> T[] toArray(T[] a) {
    E[] items = this.items;

  // TODO(b/113217601): This is needed for EagerContext::runner_ to use a
  // threadpool, so that we avoid the possibility of running the runner_ in the
  // threadpool of GPU event mgr, as that can trigger more callbacks to be
  // scheduled on that same threadpool, causing a deadlock in cases where the
  // caller of event_mgr->ThenExecute() blocks on the completion of the callback