code: def test_lightining_keypoints_rcnn_validate(
      ochuman_keypoints_dls, light_model_cls
  ):
      _, valid_dl = ochuman_keypoints_dls
      model = keypoint_rcnn.model(num_keypoints=19)
      light_model = light_model_cls(model)
      trainer = pl.Trainer(
          max_epochs=1,
          enable_model_summary=False,
          num_sanity_val_steps=0,
          logger=False,
          enable_checkpointing=False,
      )
  
      trainer.validate(light_model, valid_dl)
  
imports: import pytest
  from icevision.all import *
  from icevision.models.torchvision import keypoint_rcnn
label_desc: Use image node_id 2 for calling a global function with example usage: test_lightining_keypoints_rcnn_validate(ochuman_keypoints_dls, light_model_cls) without return types