code: def WSGIHandler(self):
      
      sdm = werkzeug_wsgi.SharedDataMiddleware(self, {
          "/": config.CONFIG["AdminUI.document_root"],
      })
      # Use DispatcherMiddleware to make sure that SharedDataMiddleware is not
      # used at all if the URL path doesn't start with "/static". This is a
      # workaround for cases when unicode URLs are used on systems with
      # non-unicode filesystems (as detected by Werkzeug). In this case
      # SharedDataMiddleware may fail early while trying to convert the
      # URL into the file path and not dispatch the call further to our own
      # WSGI handler.
      return werkzeug_wsgi.DispatcherMiddleware(self, {
          "/static": sdm,
      })
docs: Returns GRR's WSGI handler.