@SuppressWarnings("all")
    @Override
    public ByteString readBytes() throws IOException {
        try {
            return (ByteString) byteStringWrapMethod.invoke(null, readByteArray());
        } catch (Exception e) {
            ThrowUtil.throwException(e);
        }
        return null; // never get here
    }
Read an {@code sint64} field value from the internal buffer.
jraft-rheakv/rheakv-core/src/main/java/com/alipay/sofa/jraft/rhea/serialization/impl/protostuff/io/UnsafeNioBufInput.java