def __init__(self, backbone: str='sshleifer/tiny-mbart'):
    super().__init__()
    self.tokenizer = AutoTokenizer.from_pretrained(backbone, use_fast=True)
def __init__(self, backbone: str='sshleifer/tiny-mbart'):
    super().__init__()
    self.tokenizer = AutoTokenizer.from_pretrained(backbone, use_fast=True)