code: def test_batched_face_locations(self):
      img = api.load_image_file(
          os.path.join(
              os.path.dirname(__file__), "test_images", "obama.jpg"
          )
      )
      images = [img, img, img]
  
      batched_detected_faces = api.batch_face_locations(
          images, number_of_times_to_upsample=0
      )
  
      for detected_faces in batched_detected_faces:
          self.assertEqual(len(detected_faces), 1)
          self.assertEqual(detected_faces[0], (154, 611, 390, 375))
  
imports: import unittest
  import os
  import numpy
  from click.testing import CliRunner
  from face_recognition import api
  from face_recognition import face_recognition_cli
  from face_recognition import face_detection_cli
label_desc: Use image node_id 11 for calling the Test_face_recognition obj's underlying member method code with example usage: obj.test_batched_face_locations() without return types