what is the equivalent of Requestprocessor.processLocale method in Struts2?

I am new to Struts 2 and i am working on migrating Struts 1 code to Struts 2, where i have the scenario like, Action Servlet is extended and in the extended class "process" method, locale is been set in request as shown below,

public class TestServlet extends ActionServlet {

protected void process(HttpServletRequest request, HttpServletResponse response)
                throws IOException, ServletException {
        Locale locale = Locale.ENGLISH;
    locale = Locale.FRENCH;
    request.setAttribute("_locales", locale);

    super.process(request, response);

}

}

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How can i migrate this change to work in struts 2. What is the equivalent approach for this in Struts 2?

Thanks.