def set_time_range(self, start, end):
        """
        :param datetime.datetime/str start: |param_start_datetime|
        :param datetime.datetime/str end: |param_end_datetime|

        :Sample Code:
            .. code:: python

                from datetimerange import DateTimeRange
                time_range = DateTimeRange()
                print(time_range)
                time_range.set_time_range("2015-03-22T10:00:00+0900", "2015-03-22T10:10:00+0900")
                print(time_range)
        :Output:
            .. parsed-literal::

                NaT - NaT
                2015-03-22T10:00:00+0900 - 2015-03-22T10:10:00+0900
        """

        self.set_start_datetime(start)
        self.set_end_datetime(end)
:param datetime.datetime/str start: |param_start_datetime|
        :param datetime.datetime/str end: |param_end_datetime|

        :Sample Code:
            .. code:: python

                from datetimerange import DateTimeRange
                time_range = DateTimeRange()
                print(time_range)
                time_range.set_time_range("2015-03-22T10:00:00+0900", "2015-03-22T10:10:00+0900")
                print(time_range)
        :Output:
            .. parsed-literal::

                NaT - NaT
                2015-03-22T10:00:00+0900 - 2015-03-22T10:10:00+0900