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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def render_settingsLink(self, ctx, data):
 """ For authenticated users, add the URL of the settings page to the given tag. For unauthenticated users, remove the given tag from the output. """

        if self.username is None:
            return ''
        translator = self._getViewerPrivateApplication()
        return settingsLink(
            translator,
            translator.getPageComponents().settings,
            ctx.tag)