*/
public interface Hasher {
    /**
     * Feed a bunch of bytes into the hasher.
     */
    void putBytes(byte[] bytes);

    /**
     * Feed a given number of bytes into the hasher from the given offset.
     */
    void putBytes(byte[] bytes, int off, int len);

    /**
     * Feed a single byte into the hasher.
     */
    void putByte(byte value);

    /**

    public void appendToHasher(Hasher hasher) {
        if (implementationHash == null) {
            hasher.putNull();
        } else {
            hasher.putHash(implementationHash);
        }
        hasher.putBytes(serializedValue);
    }

    @Override
    public boolean equals(Object obj) {
        if (obj == this) {
            return true;
        }
        if (obj == null || obj.getClass() != getClass()) {

        try {
            transporter.put(putTask);
        } catch (Exception e) {
            throw new RuntimeException(e);
        }
    }

    @Override
    public void putBytes(byte[] source, URI relativeTarget) {
        requireNonNull(source, "source is null");
        try {
            Path tempPath = null;
            try {

    public void appendToHasher(Hasher hasher) {
        if (implementationHash == null) {
            hasher.putNull();
        } else {
            hasher.putHash(implementationHash);
        }
        hasher.putBytes(serializedValue);
    }

    @Override
    public boolean equals(Object obj) {
        if (obj == this) {
            return true;
        }
        if (obj == null || obj.getClass() != getClass()) {

        def name = file.name - '.class'
        def hasher = Hashing.md5().newHasher()
        dir.listFiles().findAll { it.name.startsWith(name) && it.name.endsWith('.class') }.sort().each {
            hasher.putBytes(it.bytes)
        }
        hasher.hash()
    }

		},
	}
	for _, tt := range tmplTests {
		t.Run(tt.name, func(t *testing.T) {
			outbytes, err := ParseTemplate(tt.template, tt.data)
			if tt.errExpected != (err != nil) {
				t.Errorf(
					"failed TestParseTemplate:\n\texpected err: %t\n\t  actual: %s",
					tt.errExpected,
					err,
				)
			}
			if tt.output != string(outbytes) {
				t.Errorf(
					"failed TestParseTemplate:\n\texpected bytes: %s\n\t  actual: %s",

          end = nextOutFrame.start
          truncated = false
        } else {
          end = outBytes.size.toLong()
          truncated = nextOutFrame.truncated
        }

        // Write a frame.
        val length = (end - start).toInt()
        outputStream.write(outBytes, start.toInt(), length)

        // If the last frame was truncated, immediately close the connection.
        if (truncated) {