code: def test_mask_rcnn_train_dataloader(mask_rcnn_records):
      dl = mask_rcnn.train_dl(mask_rcnn_records, batch_size=2)
      batch = first(dl)
      _test_mask_rcnn_batch(batch=batch)
  
imports: import pytest
  from icevision.all import *
  from icevision.models.torchvision import faster_rcnn, mask_rcnn, keypoint_rcnn
label_desc: Use image node_id 18 for calling a global function with example usage: test_mask_rcnn_train_dataloader(mask_rcnn_records) without return types