code: def mc3(rgb=False, flow=False, pretrained=False, progress=True):
      """Get MC3_18 models."""
      mc3_rgb = mc3_flow = None
      if rgb:
          mc3_rgb = mc3_18_rgb(pretrained=pretrained, progress=progress)
      if flow:
          mc3_flow = mc3_18_flow(
              pretrained=pretrained, progress=progress
          )
      models = {"rgb": mc3_rgb, "flow": mc3_flow}
      return models
  
imports: import torch.nn
  from torch.hub import load_state_dict_from_url
label_desc: Use image node_id 10 for calling a global function with example usage: mc3(rgb, flow, pretrained, progress) and returns: models