code: def __init__(
      self,
      model_name: str,
      backbone_type: str,
      pre_trained_variants: dict,
  ):
      self.model_name = model_name
      self.backbone_type = backbone_type
      self.pre_trained_variants = pre_trained_variants
      self.pretrained: bool
  
file_path: icevision/icevision/models/mmseg/utils.py
imports: from icevision.imports import *
  from icevision.utils import *
  from icevision.models.backbone_config import BackboneConfig
  from icevision.core.exceptions import PreTrainedVariantNotFound
  from icevision.models.mmseg.download_configs import download_mmseg_configs
  from mmseg.models.segmentors import *
  from mmcv import Config
label_desc: Use image node_id 1 to create a new MMSegBackboneConfig object from inherited base classes: BackboneConfig with example: obj = MMSegBackboneConfig(model_name, backbone_type, pre_trained_variants)