"old key": "old value",
    "second old key": "second old value",
}
new_dict = {**old_dict, "new key": "new value"}
```

Aqui, o `new_dict` terá todos os pares de chave-valor do `old_dict` mais o novo par de chave-valor:

```Python
{
    "old key": "old value",
    "second old key": "second old value",
    "new key": "new value",
}
```

var errDoneForNow = errors.New("done for now")

// errSkipFile returned by the fn() for readDirFn() when it needs
// to proceed to next entry.
var errSkipFile = errors.New("skip this file")

var errIgnoreFileContrib = errors.New("ignore this file's contribution toward data-usage")

// errXLBackend XL drive mode requires fresh deployment.
var errXLBackend = errors.New("XL backend requires fresh drive")

  private static final String WILDCARD = "*";

  private static final Map<MediaType, MediaType> knownTypes = new HashMap<>();

  private static MediaType createConstant(String type, String subtype) {
    MediaType mediaType =
        addKnownType(new MediaType(type, subtype, ImmutableListMultimap.<String, String>of()));
    mediaType.parsedCharset = Optional.absent();
    return mediaType;
  }

but not:

    /_ingest/pipelines
    /_ingest/pipelines/{id}

You may find counterexamples, but new endpoints should use the singular
form.

### Java Language Formatting Guidelines

Java files in the Elasticsearch codebase are automatically formatted using
the [Spotless Gradle] plugin. All new projects are automatically formatted,
while existing projects are gradually being opted-in. The formatting check

    /**
     * Default constructor for AuthenticationManager.
     */
    public AuthenticationManager() {
        // Default constructor
    }

    /**
     * Inserts a new user across all authentication chains.
     * @param user The user to insert.
     */
    public void insert(final User user) {
        chains().of(stream -> stream.forEach(c -> c.update(user)));
    }

    /**

  }

  public void testCustomOffsetExceptions() {
    assertThrows(IllegalArgumentException.class, () -> new MyIntegerDomain().offset(0, -1));
    assertThrows(
        IllegalArgumentException.class, () -> new MyIntegerDomain().offset(Integer.MAX_VALUE, 1));
  }

  private static final class MyIntegerDomain extends DiscreteDomain<Integer> {

    Checksum checksum = supplier.get();
    checksum.update(bytes, 0, bytes.length);
    long value = checksum.getValue();

    String toString = "name";
    HashFunction func = new ChecksumHashFunction(supplier, 32, toString);
    assertThat(func.toString()).isEqualTo(toString);
    assertEquals(value, func.hashBytes(bytes).padToLong());
  }

  private static void assertHash32(

        case null -> null;
        case Integer i -> i;
        case Number n -> n.intValue();
        case String s -> toInteger(s);
        case java.util.Date d -> pattern != null ? Integer.valueOf(new SimpleDateFormat(pattern).format(d)) : (int) d.getTime();
        case Boolean b -> b ? 1 : 0;
        default -> toInteger(o.toString());
        };
    }

    private static Integer toInteger(final String s) {

    public Throwable getRootCause() {
        return rootCause;
    }

    @Override
    public String toString() {
        if (rootCause != null) {
            final StringWriter sw = new StringWriter();
            final PrintWriter pw = new PrintWriter(sw);
            rootCause.printStackTrace(pw);
            return super.toString() + "\n" + sw;
        }
        return super.toString();
    }

/**
 *
 * @since 4.0.0
 */
@Experimental
public interface DependencyCoordinatesFactory extends Service {

    /**
     * Creates a new {@link DependencyCoordinates} object from the request.
     *
     * @param request the request containing the various data
     * @return a new {@link DependencyCoordinates} object
     *
     * @throws IllegalArgumentException if {@code request} is null or