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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 raise_not_found(self, environ, msg):
 """Utility function for raising a werkzeug.exceptions.NotFound execption with the supplied WSGI environment and message. :param dict environ: The WSGI environment dictionary for the request :param str msg: The error message """

        raise NotFound(response=self.rewriterapp._error_response(environ, msg))