def convert_epoch_to_timestamp(cls, timestamp, tsformat):
        """Converts the given float representing UNIX-epochs into an actual timestamp.

        :param float timestamp:    Timestamp as UNIX-epochs.
        :param string tsformat:    Format of the given timestamp. This is used to convert the
            timestamp from UNIX epochs. For valid examples take a look into the
            :py:func:`time.strptime` documentation.

        :return:    Returns the timestamp as defined in format.
        :rtype: string
        """
        return time.strftime(tsformat, time.gmtime(timestamp))