impl = EmptySetBuilderImpl.instance();
      }
    }

    Builder(@SuppressWarnings("unused") boolean subclass) {
      this.impl = null; // unused
    }

    @VisibleForTesting
    void forceJdk() {
      requireNonNull(impl); // see the comment on the field
      this.impl = new JdkBackedSetBuilderImpl<>(impl);
    }

    final void copyIfNecessary() {
      if (forceCopy) {
        copy();

// MD5 sum once the r returns io.EOF.
func NewReader(ctx context.Context, r io.Reader, etag ETag, forceMD5 []byte) *Reader {
	if er, ok := r.(*Reader); ok {
		if er.readN == 0 && Equal(etag, er.checksum) {
			return er
		}
	}
	if len(forceMD5) != 0 {
		return &Reader{
			src:      r,
			md5:      NewUUIDHash(forceMD5),
			checksum: etag,
		}
	}
	return &Reader{
		src:      r,
		md5:      md5.New(),

		if !disableMD5 {
			if _, ok := src.(etag.Tagger); !ok {
				src = etag.NewReader(ctx, r, MD5, forceMD5)
			} else {
				src = etag.Wrap(r, src)
			}
		} else {
			src = r
		}
	} else if _, ok := src.(etag.Tagger); !ok {
		if !disableMD5 {
			src = etag.NewReader(ctx, src, MD5, forceMD5)
		}
	}
	var h hash.Hash
	if len(SHA256) != 0 {
		h = sha256.New()
	}
	return &Reader{

      @Override
      public ImmutableBiMap<Object, Object> create(List<Entry<?, ?>> entries) {
        return ImmutableBiMap.builder().putAll(entries).buildOrThrow();
      }
    },
    FORCE_JDK {
      @Override
      public ImmutableBiMap<Object, Object> create(List<Entry<?, ?>> entries) {
        return ImmutableBiMap.builder().putAll(entries).buildJdkBacked();
      }
    };

 *
 * @since 4.0.0
 */
@Experimental
public interface EncryptOptions extends Options {
    /**
     * Should the operation be forced (ie overwrite existing config, if any).
     *
     * @return an {@link Optional} containing the boolean value {@code true} if specified, or empty
     */
    Optional<Boolean> force();

    /**

            assertEquals(transport, result);
            verify(transportPool).getSmbTransport(context, TEST_HOST, DEFAULT_PORT, true, false);
        }

        @Test
        @DisplayName("Should get transport by name with forced signing")
        void testGetSmbTransportByNameForceSigning() throws UnknownHostException, IOException {
            // Given

     * @return {@code true} if remote repositories should be re-checked for updated artifacts/metadata, {@code false}
     *         otherwise.
     */
    boolean isForceUpdate();

    /**
     * Enables/disabled forced checks for updated artifacts/metadata on remote repositories.
     *
     * @param forceUpdate {@code true} to forcibly check the remote repositories for updated artifacts/metadata, {@code

    }

    @Test
    void acceptPropagatesException() {
        SmbFile dir = Mockito.mock(SmbFile.class);
        SmbFilenameFilter filter = (d, n) -> {
            throw new SmbException("forced exception");
        };
        Exception e = assertThrows(Exception.class, () -> filter.accept(dir, "any"));
        assertTrue(e instanceof SmbException);
    }

Historically, Gradle has shipped with some Groovy types in very prominent APIs.
This required the Kotlin DSL to add special integration to work with Groovy closures.
This has also forced plugins written in languages other than Groovy to use Groovy types for some APIs.

When the Kotlin DSL was introduced, we made an effort to add non-Groovy equivalents for all APIs.

   * return type is plain FilenameFilter. If we made such a change, then the annotation we choose
   * here would have no significance to end users, who would be forced to conform to the signature
   * used in FilenameFilter.)
   */
  @Override
  public boolean accept(File dir, String fileName) {
    return pattern.matcher(fileName).matches();
  }