title: AgeRange not in Rekognition response
body: <p><a href="https://boto3.readthedocs.io/en/latest/reference/services/rekognition.html#Rekognition.Client.delete_faces" rel="nofollow noreferrer">The docs</a> mention AgeRange in the response of detect_faces.</p>
  
  <p>But, using the Python SDK (boto3), I cannot see it in the response.</p>
  
  <p>Am I missing something? Is the feature in the docs but not yet in production (it is a new feature from feb 10th)?</p>
  
  <pre><code>AWS_ACCESS_KEY_ID = "..."
  AWS_SECRET_ACCESS_KEY = "..."
  os.environ['AWS_ACCESS_KEY_ID'] = AWS_ACCESS_KEY_ID
  os.environ['AWS_SECRET_ACCESS_KEY'] = AWS_SECRET_ACCESS_KEY
  
  client = boto3.client('rekognition')
  reko = client.detect_faces(
      Image={'S3Object': {'Bucket': '...',
                'Name': 'user_uploads/....JPEG',}},
      Attributes=['ALL']
  )
  
  res['FaceDetails'][0].keys()
  # outputs 
  # dict_keys(['Landmarks', 'Eyeglasses', 'Quality', 'Confidence',
  # 'Mustache', 'Emotions', 'Smile', 'BoundingBox', 'Beard', 'Gender',
  # 'Pose', 'EyesOpen', 'Sunglasses', 'MouthOpen'])
  </code></pre>