Resteasy clients created by way of RestClientProxyFactoryBean do not have support for JAX-RS 2.0 ClientRequestFilter et. al. Instead, only deprecated ClientExecutionInterceptors may be used.
Request: Plumb support for JAX-RS 2.0 filters, e.g. ClientRequestFilter.
Current call chain: ClientProxy --> ClientInvoker --> ClientRequest --> ClientExecutionContextImpl --> ClientExecutionInterceptor