*
   * @since 19.0
   */
  public static HashFunction concatenating(Iterable<HashFunction> hashFunctions) {
    checkNotNull(hashFunctions);
    // We can't use Iterables.toArray() here because there's no hash->collect dependency
    List<HashFunction> list = new ArrayList<>();
    for (HashFunction hashFunction : hashFunctions) {
      list.add(hashFunction);
    }

   *
   * @since 19.0
   */
  public static HashFunction concatenating(Iterable<HashFunction> hashFunctions) {
    checkNotNull(hashFunctions);
    // We can't use Iterables.toArray() here because there's no hash->collect dependency
    List<HashFunction> list = new ArrayList<>();
    for (HashFunction hashFunction : hashFunctions) {
      list.add(hashFunction);
    }

    private TestFile hashFile(TestFile file, HashFunction hashFunction) {
        def hashFile = getHashFile(file, hashFunction)
        def hash = hashFunction.hashFile(file)
        hashFile.text = hash.toZeroPaddedString(hashFunction.hexDigits)
        return hashFile
    }

    private TestFile getHashFile(TestFile file, HashFunction hashFunction) {
        def algorithm = hashFunction.algorithm.toLowerCase(Locale.ROOT).replaceAll('-', '')

                }
            }
        }

        private void publishChecksum(ExternalResourceName destination, File content, HashFunction hashFunction) {
            byte[] checksum = createChecksumFile(content, hashFunction);

    }

    private static final HashFunction MD5 = MessageDigestHashFunction.of("MD5");

    private static final HashFunction SHA1 = MessageDigestHashFunction.of("SHA-1");

    private static final HashFunction SHA256 = MessageDigestHashFunction.of("SHA-256");

    private static final HashFunction SHA512 = MessageDigestHashFunction.of("SHA-512");

    private static final HashFunction DEFAULT = MD5;

    /**

      imports = "com.google.common.io.Files")
  public
  static HashCode hash(File file, HashFunction hashFunction) throws IOException {
    return asByteSource(file).hash(hashFunction);
  }

  /**
   * Fully maps a file read-only in to memory as per {@link
   * FileChannel#map(java.nio.channels.FileChannel.MapMode, long, long)}.
   *
   * <p>Files are mapped from offset 0 to its length.

      imports = "com.google.common.io.Files")
  public
  static HashCode hash(File file, HashFunction hashFunction) throws IOException {
    return asByteSource(file).hash(hashFunction);
  }

  /**
   * Fully maps a file read-only in to memory as per {@link
   * FileChannel#map(java.nio.channels.FileChannel.MapMode, long, long)}.
   *
   * <p>Files are mapped from offset 0 to its length.

import java.lang.invoke.MethodHandles;
import java.lang.invoke.MethodType;
import java.nio.ByteBuffer;
import java.util.zip.Checksum;
import org.checkerframework.checker.nullness.qual.Nullable;

/**
 * {@link HashFunction} adapter for {@link Checksum} instances.
 *
 * @author Colin Decker
 */
@Immutable
@ElementTypesAreNonnullByDefault
final class ChecksumHashFunction extends AbstractHashFunction implements Serializable {

import org.opensearch.search.SearchHit;
import org.opensearch.search.SearchHits;
import org.opensearch.search.sort.SortBuilder;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

import com.google.common.hash.HashFunction;
import com.google.common.hash.Hashing;

public abstract class AbstractCrawlerService {
    private static final Logger logger = LoggerFactory.getLogger(AbstractCrawlerService.class);

	t.Root = nil
	t.lex = lex
	t.vars = []string{"$"}
	t.funcs = funcs
	t.treeSet = treeSet
	lex.options = lexOptions{
		emitComment: t.Mode&ParseComments != 0,
		breakOK:     !t.hasFunction("break"),
		continueOK:  !t.hasFunction("continue"),
	}
}

// stopParse terminates parsing.
func (t *Tree) stopParse() {
	t.lex = nil
	t.vars = nil
	t.funcs = nil
	t.treeSet = nil
}