'Quarantine a file; responsible for incrementing the associated logger\'s
count of quarantines.
:param data_file: full path of data file to quarantine
:param msg: reason for quarantining to be included in the exception
:returns: DiskFileQuarantined exception object'

def _quarantine(self, data_file, msg):

    self._quarantined_dir = self.manager.quarantine_renamer(self._device_path, data_file)
    self._logger.warning(('Quarantined    object    %s:    %s' % (data_file, msg)))
    self._logger.increment('quarantines')
    return DiskFileQuarantined(msg)
