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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 utime(self, path, mtime, atime):
 """ Change file last access and modification times. :type path: str :param path: the path to the file or directory :type mtime: int :param mtime: new modification time in seconds :type atime: int :param atime: new access time in seconds :raises: :exc:`~exceptions.IOError` """

        _complain_ifclosed(self.closed)
        return self.fs.utime(path, int(mtime), int(atime))