support paraformer-large-contextual with vad and punc model

lzr265946

2023-02-17 267e2d09e643d6d0fd45a0d874bbaa0927152def

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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