message: Updated docstrings for Segmentation
diff: @@ -119,6 +119,10 @@ class Segmentation:
  """Represents one Segmentation object in the image segmenter's results.
  Attributes:
  + height: The height of the mask. This is an intrinsic parameter of the model
  + being used, and does not depend on the input image dimensions.
  + width: The width of the mask. This is an intrinsic parameter of the model
  + being used, and does not depend on the input image dimensions.
  colored_labels: A list of `ColoredLabel` objects.
  category_mask: A NumPy 2D-array of the category mask.
  confidence_masks: A list of `ConfidenceMask` objects.
  