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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 islice(self, start, end):
 """ Returns a new DateTimeIndex, containing a subslice of the timestamps in this index, as specified by the given integer start and end locations. Parameters start : int The location of the start of the range, inclusive. end : int The location of the end of the range, exclusive. """

        jdt_index = self._jdt_index.islice(start, end)
        return DateTimeIndex(jdt_index=jdt_index)