* Instead ✨ **use `Union[SomeType, None]`** ✨.

Both are equivalent and underneath they are the same, but I would recommend `Union` instead of `Optional` because the word "**optional**" would seem to imply that the value is optional, and it actually means "it can be `None`", even if it's not optional and is still required.

I think `Union[SomeType, None]` is more explicit about what it means.

   * all {@code a} of type {@code A} (and similarly for {@code reverse}). Note that a {@code false}
   * result from this method does not imply that the converters are known <i>not</i> to be
   * interchangeable.
   */
  @Override
  public boolean equals(@CheckForNull Object object) {
    return super.equals(object);
  }

  // Static converters

		case IsErr(reason, errFileNotFound, errFileVersionNotFound, errVolumeNotFound, errPartMissingOrCorrupt, errOutdatedXLMeta, errLegacyXLMeta):
			driveState = madmin.DriveStateMissing
		default:
			// all remaining cases imply corrupt data/metadata
			driveState = madmin.DriveStateCorrupt
		}

		result.Before.Drives = append(result.Before.Drives, madmin.HealDriveInfo{
			UUID:     "",
			Endpoint: storageEndpoints[i].String(),

can exhibit non-sequentially consistent executions.
In particular, note that a read <i>r</i> may observe the value written by any write <i>w</i>
that executes concurrently with <i>r</i>.
Even if this occurs, it does not imply that reads happening after <i>r</i>
will observe writes that happened before <i>w</i>.
</p>

<p>
In this program:
</p>

<pre>
var a, b int

func f() {
	a = 1
	b = 2
}

      }
    }
  }

  /**
   * This test checks whether connections are gzipped by default. This behavior in not required by
   * the API, so a failure of this test does not imply a bug in the implementation.
   */
  @Test
  fun gzipEncodingEnabledByDefault() {
    server.enqueue(
      MockResponse.Builder()
        .body(gzip("ABCABCABC"))

import org.apache.maven.plugin.descriptor.io.PluginDescriptorStaxWriter;

import static org.apache.maven.internal.impl.StaxLocation.getLocation;
import static org.apache.maven.internal.impl.StaxLocation.getMessage;
import static org.apache.maven.internal.impl.Utils.nonNull;

@Named
@Singleton
public class DefaultPluginXmlFactory implements PluginXmlFactory {
    @Override

import org.eclipse.aether.impl.MetadataGeneratorFactory;
import org.eclipse.aether.impl.MetadataResolver;
import org.eclipse.aether.impl.OfflineController;
import org.eclipse.aether.impl.RemoteRepositoryFilterManager;
import org.eclipse.aether.impl.RemoteRepositoryManager;
import org.eclipse.aether.impl.RepositoryConnectorProvider;
import org.eclipse.aether.impl.RepositoryEventDispatcher;
import org.eclipse.aether.impl.RepositorySystemLifecycle;

        @Override
        public Lock get() {
          return new ReentrantLock();
        }
      };

  @Param({"2", "8", "64", "1024", "65536"})
  int numStripes;

  @Param Impl impl;

  enum Impl {
    EAGER {
      @Override
      Striped<Lock> get(int stripes) {
        return Striped.lock(stripes);
      }
    },
    LAZY_SMALL {
      @Override
      Striped<Lock> get(int stripes) {

        @Override
        public Lock get() {
          return new ReentrantLock();
        }
      };

  @Param({"2", "8", "64", "1024", "65536"})
  int numStripes;

  @Param Impl impl;

  enum Impl {
    EAGER {
      @Override
      Striped<Lock> get(int stripes) {
        return Striped.lock(stripes);
      }
    },
    LAZY_SMALL {
      @Override
      Striped<Lock> get(int stripes) {

@VmOptions({"-Xms8g", "-Xmx8g"})
public class SingleThreadAbstractFutureBenchmark {
  @Param Impl impl;

  private final Exception exception = new Exception();
  private Facade<?> notDoneFuture;

  @BeforeExperiment
  void setUp() throws Exception {
    notDoneFuture = impl.newFacade();
  }

  @Benchmark
  public long timeComplete_Normal(int reps) throws Exception {
    long r = 0;