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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 add_favicon_path(self, path: str) -> None: """Add path to serve favicon file. ``path`` should be a directory, which contains favicon file (``favicon.ico``) for your app. """

        spec = web.URLSpec(
            '/(favicon.ico)',
            StaticFileHandler,
            dict(path=path)
        )
        # Need some check
        handlers = self.handlers[0][1]
        handlers.append(spec)