'Perform any mutations to container listing records that are common to
all serialization formats, and returns it as a dict.
Converts created time to iso timestamp.
Replaces size with \'swift_bytes\' content type parameter.
:params record: object entry record
:returns: modified record'

def update_data_record(self, record):

    (name, created, size, content_type, etag) = record[:5]
    if (content_type is None):
        return {'subdir': name}
    response = {'bytes': size, 'hash': etag, 'name': name, 'content_type': content_type}
    response['last_modified'] = Timestamp(created).isoformat
    override_bytes_from_content_type(response, logger=self.logger)
    return response
