public Builder setCategoryMaskBytes(com.google.protobuf.ByteString value) {
      if (value == null) {
        throw new NullPointerException();
      }
      checkByteStringIsUtf8(value);
      categoryMask_ = value;
      bitField0_ |= 0x00000001;
      onChanged();
      return this;
    }
<pre>
A PNG image where each pixel in the mask represents the category in which
the pixel in the original image was predicted to belong to. The size of
this image will be the same as the original image. The mapping between the
AnntoationSpec and the color can be found in model's metadata. The model
will choose the most likely category and if none of the categories reach
the confidence threshold, the pixel will be marked as background.
</pre>

<code>string category_mask = 1;</code>

@param value The bytes for categoryMask to set.
@return This builder for chaining.
java-visionai/proto-google-cloud-visionai-v1/src/main/java/com/google/cloud/visionai/v1/ImageSegmentationPredictionResult.java