modeling_bitnet.py

from transformers import PreTrainedModel
from .configuration_bitnet import BitNetConfig 
from .quantization import BitLinear
from .linear_to_bitlinear import replace_linears_in_hf

class BitNetModel(PreTrainedModel):
    config_class = BitNetConfig
    def __init__(self, config):
        super().__init__(config)
        replace_linears_in_hf(self)