update paraformer online recipe

haoneng.lhn

2023-09-25 d7e2259ccf4c3b7bbcd1afc6b73f40e0cc924151

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from abc import ABC
from abc import abstractmethod
from typing import Iterator
 
 
class AbsIterFactory(ABC):
    @abstractmethod
    def build_iter(self, epoch: int, shuffle: bool = None) -> Iterator:
        raise NotImplementedError