@classmethod
def create_empty(cls):
    data = file_extract.FileExtract(StringIO.StringIO('\x00\x00\x00\x00'), '=')
    return class_data_item(data)
@classmethod
def create_empty(cls):
    data = file_extract.FileExtract(StringIO.StringIO('\x00\x00\x00\x00'), '=')
    return class_data_item(data)