code: def od_model_change(self, change):
      model_name = change.new
      lib_type = self.lib_type
      model_type = getattr(lib_type, model_name)
      backbone_type = getattr(model_type, "backbones")
      backbone_list = [
          item for item in dir(model_type.backbones) if "__" not in item
      ]
  
      self.model_type = model_type
      self.backbone_type = backbone_type
      self.backbone_list = backbone_list
      self.backbones_available.options = backbone_list
  
file_path: icevision/icevision/widgets/model_choice_ui.py
imports: from icevision import models
  import ipywidgets
  from IPython.display import display
label_desc: Use image node_id 6 for calling the ModelChoiceUI obj's underlying member method code with example usage: obj.od_model_change(change) without return types