CharBuffer buf2 = CharBuffer.allocate(expected.length());
    assertEquals(expected.length() == 0 ? -1 : expected.length(), reader.read(buf2));
    Java8Compatibility.flip(buf2);
    assertEquals(expected, buf2.toString());
    assertFullyRead(reader);

    // read in chunks to fixed CharBuffer
    reader = new CharSequenceReader(charSequence);
    buf2 = CharBuffer.allocate(5);
    builder = new StringBuilder();

  }

  @Override
  public HashCode hashInt(int input) {
    return hashBytes(ByteBuffer.allocate(4).order(ByteOrder.LITTLE_ENDIAN).putInt(input).array());
  }

  @Override
  public HashCode hashLong(long input) {
    return hashBytes(ByteBuffer.allocate(8).order(ByteOrder.LITTLE_ENDIAN).putLong(input).array());
  }

  @Override
  public HashCode hashUnencodedChars(CharSequence input) {

          .put(Buffer.class, ByteBuffer.allocate(0))
          .put(CharBuffer.class, CharBuffer.allocate(0))
          .put(ByteBuffer.class, ByteBuffer.allocate(0))
          .put(ShortBuffer.class, ShortBuffer.allocate(0))
          .put(IntBuffer.class, IntBuffer.allocate(0))
          .put(LongBuffer.class, LongBuffer.allocate(0))
          .put(FloatBuffer.class, FloatBuffer.allocate(0))

    return CharBuffer.allocate(generateInt());
  }

  @Generates
  ByteBuffer generateByteBuffer() {
    return ByteBuffer.allocate(generateInt());
  }

  @Generates
  ShortBuffer generateShortBuffer() {
    return ShortBuffer.allocate(generateInt());
  }

  @Generates
  IntBuffer generateIntBuffer() {
    return IntBuffer.allocate(generateInt());
  }

	// Managed values.
	val          atomic.Pointer[T]
	lastUpdateMs atomic.Int64
	updating     sync.Mutex
}

// New allocates a new cached value instance. Tt must be initialized with
// `.TnitOnce`.
func New[T any]() *Cache[T] {
	return &Cache[T]{}
}

// NewFromFunc allocates a new cached value instance and initializes it with an
// update function, making it ready for use.

corresponds to the type argument with which <code>P</code> was
<a href="#Instantiations">instantiated</a>.
</p>

<p>
The capacity of a slice is the number of elements for which there is
space allocated in the underlying array.
At any time the following relationship holds:
</p>

<pre>
0 &lt;= len(s) &lt;= cap(s)
</pre>

<p>
The length of a <code>nil</code> slice, map or channel is 0.

  private void readObject(ObjectInputStream stream) throws IOException, ClassNotFoundException {
    stream.defaultReadObject();
    int size = Serialization.readCount(stream);
    init(16); // resist hostile attempts to allocate gratuitous heap
    Serialization.populateMap(this, stream, size);
  }

  @GwtIncompatible // Not needed in emulated source
  @J2ktIncompatible
  private static final long serialVersionUID = 0;

    return CharBuffer.allocate(generateInt());
  }

  @Generates
  ByteBuffer generateByteBuffer() {
    return ByteBuffer.allocate(generateInt());
  }

  @Generates
  ShortBuffer generateShortBuffer() {
    return ShortBuffer.allocate(generateInt());
  }

  @Generates
  IntBuffer generateIntBuffer() {
    return IntBuffer.allocate(generateInt());
  }

  @Generates

    checkArgument(bufferSize > 0, "bufferSize must be positive: %s", bufferSize);
    encoder.reset();

    charBuffer = CharBuffer.allocate(bufferSize);
    Java8Compatibility.flip(charBuffer);

    byteBuffer = ByteBuffer.allocate(bufferSize);
  }

  @Override
  public void close() throws IOException {
    reader.close();
  }

  @Override

    checkArgument(bufferSize > 0, "bufferSize must be positive: %s", bufferSize);
    encoder.reset();

    charBuffer = CharBuffer.allocate(bufferSize);
    Java8Compatibility.flip(charBuffer);

    byteBuffer = ByteBuffer.allocate(bufferSize);
  }

  @Override
  public void close() throws IOException {
    reader.close();
  }

  @Override