public GuiceRestliServlet(RestLiConfig config, // required
GuiceInjectResourceFactory resourceFactory, // injected automatically by Guice
OptionalFilterChain filterChain,
OptionalEngine engine)
{
_r2Servlet = new RAPServlet(
new FilterChainDispatcher(
new DelegatingTransportDispatcher(
new RestLiServer(config, resourceFactory, engine.value)),
filterChain.value
)