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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 get_utc_timestamp(self, handle):
 """Return the UTC timestamp."""

        fpath = self._fpath_from_handle(handle)
        datetime_obj = datetime.datetime.utcfromtimestamp(
            os.stat(fpath).st_mtime
        )
        return timestamp(datetime_obj)