How to access the current request while in an domain object used by requestfactory?

I am using GWT RequestFactory. When I am in a normal RPC class that extends RemoteServiceServlet I can access the current request using this.getThreadLocalReq开发者_JAVA技巧uest().

Now I am in a Domain object. How can I access the current request? I need to get getThreadLocalRequest().getRemoteUser()

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Similarly: RequestFactoryServlet.getThreadLocalRequest().getRemoteUser()