keras/src/quantizers/quantizers.py/AbsMaxQuantizer/__init__
class AbsMaxQuantizer:    def __init__(
        self,
        axis,
        value_range=(-127, 127),
        epsilon=backend.epsilon(),
        output_dtype="int8",
    ):
        Quantizer.__init__(self, output_dtype=output_dtype)
        if isinstance(axis, int):
            axis = (axis,)
        self.axis = tuple(axis)
        self.value_range = value_range
        self.epsilon = epsilon