@Override
    public boolean isInboundDone() {
        return delegate.isInboundDone();
    }
A wrapper around {@link ConscryptEngine} that adapts to the new Java 9 (and potentially later
patches of 8) {@code setHandshakeApplicationProtocolSelector} API (which requires Java 8 for
compilation, due to the use of {@link BiFunction}).
common/src/main/java/org/conscrypt/Java8EngineWrapper.java