localhost:8082/api/example/1

{"error":{"code":10,"message":"The session has expired, please reload the page."}}

RunContext runContext = ClientRunContexts.empty()
        .withSubject("technical-user")
        .withUserAgent(UserAgents.createDefault());

runContext.run(...)

	public static RunContext getRunContext() {
		Subject subject = new Subject();
		subject.getPrincipals().add(new BasicUserPrincipal(IRESTService.API_TECHNICAL_USER));
		return ClientRunContexts.empty()
		        .withSubject(subject)  // String argument not accepted here
		        .withUserAgent(UserAgents.createDefault());
	}

	 RESTUtils.getRunContext().run(() -> {
	 	...
	 	...
	 });

@Order(4600)
public class RestProxyRequestHandler extends AbstractRestProxyRequestHandler {

  @Override
  protected String getRemoteBaseUrl() {
    return BEANS.get(ServiceTunnelTargetUrlProperty.class).getValue().replace("/process", "");
  }

  @Override
  protected String getLocalContextPathPrefix() {
    return "/api/";
  }

  @Override
  @PostConstruct
  protected void initialize() {
    super.initialize();

    // Remove the cookie headers. The cookie is managed by the server running this proxy, not by the remote server.
    getProxy().withRequestHeaderFilter(new HttpHeaderNameFilter("Cookie"));
    getProxy().withResponseHeaderFilter(new HttpHeaderNameFilter("Set-Cookie"));
  }

  @Override
  protected HttpProxyRequestOptions createHttpProxyRequestOptions(HttpServletRequest req, HttpServletResponse resp) {
    return addSignatureHeader(new HttpProxyRequestOptions());
  }

  protected HttpProxyRequestOptions addSignatureHeader(HttpProxyRequestOptions options) {
    DefaultAuthToken token = BEANS.get(DefaultAuthTokenSigner.class).createDefaultSignedToken(DefaultAuthToken.class);
    if (token != null) {
      options.withCustomRequestHeader(HttpServiceTunnel.TOKEN_AUTH_HTTP_HEADER, token.toString());
    }
    return options;
  }
}