code: def od_backbone_change(self, change):
      backbone_name = change.new
      model_type = self.model_type
      backbone_type = self.backbone_type
  
      backbone = getattr(backbone_type, backbone_name)
  
      self.backbone = backbone
  
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 7 for calling the ModelChoiceUI obj's underlying member method code with example usage: obj.od_backbone_change(change) without return types