code: def convert_epoch_to_timestamp(cls, timestamp, tsformat):
          
          return time.strftime(tsformat, time.gmtime(timestamp))
docs: 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