code: def test_filter_frame_labels():
      dataset = foz.load_zoo_dataset("quickstart-video").clone()
  
      label_counts = dataset.count_values(
          "frames.detections.detections.label"
      )
      assert len(label_counts) == 3
      # {'person': 1108, 'vehicle': 7511, 'road sign': 2726}
  
      view = dataset.filter_labels(
          "frames.detections", F("label") == "vehicle"
      )
  
      label_counts = view.count_values(
          "frames.detections.detections.label"
      )
      assert len(label_counts) == 1
      # {'vehicle': 7511}
  
      view.save()
  
      label_counts = dataset.count_values(
          "frames.detections.detections.label"
      )
      assert len(label_counts) == 1
  
imports: import unittest
  import fiftyone
  import fiftyone.zoo
  from fiftyone import ViewField
label_desc: Use image node_id 1 for calling a global function with example usage: test_filter_frame_labels() without return types