ComfyUI/models/BiRefNet/RMBG-2.0/BiRefNet_config.py

from transformers import PretrainedConfig

class BiRefNetConfig(PretrainedConfig):
    model_type = "SegformerForSemanticSegmentation"
    def __init__(
        self,
        bb_pretrained=False,
        **kwargs
    ):
        self.bb_pretrained = bb_pretrained
        super().__init__(**kwargs)