How to Remove duplicate result body in struts2 - configuration

Question

I have a global result that returns a 404 error to the user.
I also have a default action that I would like to do the same thing.
I would like my success result in the default action to extend my global notfound result, but I don't see how to. Am I missing something?
<default-action-ref name="notfound" />
<global-results>
<result name="notfound" type="httpheader">
<param name="error">404</param>
<param name="errorMessage">Oh No You Didn't</param>
</result>
</global-results>
<global-exception-mappings>
<exception-mapping exception="com.me.s2ui.AccessException" result="notfound" />
</global-exception-mappings>
<action name="notfound">
<result type="httpheader">
<param name="error">404</param>
<param name="errorMessage">Oh No You Didn't</param>
</result>
</action>

Answer 1

As stated by #Aleksandr M and #Roman C in the comments, what I wanted was not possible. After posting the question I realized I wanted logging in the default action, so I ended up writing a class.
#org.apache.struts2.convention.annotation.Action("notfound")
public class DefaultAction implements Action, ServletRequestAware
{
private static Logger logger = LogManager.getLogger(DefaultAction.class);
private HttpServletRequest request;
#Override
public String execute() throws Exception
{
logger.warn("Unknown target "+request.getRequestURI());
return "securityerror";
}
#Override
public void setServletRequest(HttpServletRequest req)
{
this.request = req;
}
}
Struts.xml
<default-action-ref name="notfound" />
<global-results>
<result name="intLogin" type="redirect">${#request.loginUrl}</result>
<result name="input" type="tiles">user</result>
<result name="securityerror" type="httpheader">
<param name="error">404</param>
<param name="errorMessage">Oh No You Didn't</param>
</result>
</global-results>
<global-exception-mappings>
<exception-mapping exception="com.me.s2ui.AccessException" result="securityerror" />
</global-exception-mappings>