support for turning off timestamps

lzr265946

2023-02-10 7aa2e885f41829e5148ed3be44d3ebb43e04ff40

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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