'Maximum length of a fragment, including header.
NB: a fragment archive is a sequence of 0 or more max-length
fragments followed by one possibly-shorter fragment.'

@property
def fragment_size(self):

    if (self._fragment_size is None):
        self._fragment_size = self.pyeclib_driver.get_segment_info(self.ec_segment_size, self.ec_segment_size)['fragment_size']
    return self._fragment_size
