code: def test_select_frame_fields():
      dataset = foz.load_zoo_dataset("quickstart-video").clone()
  
      view = dataset.select_fields()
      assert "detections" not in view.get_frame_field_schema()
  
      frame = view.first().frames.first()
      assert frame.detections is None
  
imports: import unittest
  import fiftyone
  import fiftyone.zoo
  from fiftyone import ViewField
label_desc: Use image node_id 2 for calling a global function with example usage: test_select_frame_fields() without return types