@Override public void setClosedCallback(CompletedCallback handler) { mSink.setClosedCallback(handler); }
@Override public CompletedCallback getClosedCallback() { return mSink.getClosedCallback(); }
@Override public void close() { mSink.close(); }
@Override public boolean isOpen() { return mSink.isOpen(); }
@Override public WritableCallback getWriteableCallback() { return mSink.getWriteableCallback(); }
@Override public void setWriteableCallback(WritableCallback handler) { mSink.setWriteableCallback(handler); }
@Override public void write(ByteBufferList bb) { assertContent(); mSink.write(bb); }