code: def fridge_retinanet_model() -> nn.Module:
      backbone = models.torchvision.retinanet.backbones.resnet18_fpn(
          pretrained=False
      )
      return retinanet.model(num_classes=5, backbone=backbone)
  
label_desc: Use image node_id 1 for calling a global function with example usage: fridge_retinanet_model() and returns: retinanet