@Override
    public void apply(ApiResponse response, IPolicyContext context, Object config,
            IPolicyChain<ApiResponse> chain) {
        chain.doApply(response);
    }
@see io.apiman.gateway.engine.policy.IPolicy#apply(io.apiman.gateway.engine.beans.ApiResponse, io.apiman.gateway.engine.policy.IPolicyContext, java.lang.Object, io.apiman.gateway.engine.policy.IPolicyChain)
gateway/engine/core/src/test/java/io/apiman/gateway/engine/util/PassthroughPolicy.java