code: <Q extends BaseProxy> AutoBean<Q> getProxyForReturnPayloadGraph(final SimpleProxyId<Q> id) {
      @SuppressWarnings("unchecked")
      AutoBean<Q> bean = (AutoBean<Q>) this.state.returnedProxies.get(id);
      if (bean == null) {
        final Class<Q> proxyClass = id.getProxyClass();
        bean = this.createProxy(proxyClass, id, true);
        this.state.returnedProxies.put(id, bean);
      }
  
      return bean;
    }
docs: Creates or retrieves a new canonical AutoBean to represent the given id in the returned
  payload.