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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 all_minutes(self):
 """ Returns a DatetimeIndex representing all the minutes in this calendar. """

        opens_in_ns = self._opens.values.astype(
            'datetime64[ns]',
        ).view('int64')

        closes_in_ns = self._closes.values.astype(
            'datetime64[ns]',
        ).view('int64')

        return DatetimeIndex(
            compute_all_minutes(opens_in_ns, closes_in_ns),
            tz=UTC,
        )