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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 op_paths(self, path_prefix=None):
 # type: (Path) -> Generator[Tuple[UrlPath, Operation]] """ Yield operations paths stored in containers. """

        url_path = self.path
        if path_prefix:
            url_path = path_prefix + url_path

        yield url_path, self