code: def list_unets():
      new_unets = script_callbacks.list_unets_callback()
  
      unet_options.clear()
      unet_options.extend(new_unets)
  
file_path: stable-diffusion-webui/modules/sd_unet.py
imports: import torch.nn
  from modules import script_callbacks, shared, devices
label_desc: Use image node_id 1 for calling a global function with example usage: list_unets() without return types