code: def test_fastai_keypoints_rcnn_train(ochuman_keypoints_dls):
      model = keypoint_rcnn.model(num_keypoints=19)
      learn = keypoint_rcnn.fastai.learner(
          dls=[*ochuman_keypoints_dls], model=model
      )
  
      learn.fine_tune(1, 1e-4)
  
label_desc: Use image node_id 1 for calling a global function with example usage: test_fastai_keypoints_rcnn_train(ochuman_keypoints_dls) without return types