private com.google.protobuf.RepeatedFieldBuilderV3<
            com.google.cloud.videointelligence.v1.DetectedAttribute,
            com.google.cloud.videointelligence.v1.DetectedAttribute.Builder,
            com.google.cloud.videointelligence.v1.DetectedAttributeOrBuilder>
        getAttributesFieldBuilder() {
      if (attributesBuilder_ == null) {
        attributesBuilder_ =
            new com.google.protobuf.RepeatedFieldBuilderV3<
                com.google.cloud.videointelligence.v1.DetectedAttribute,
                com.google.cloud.videointelligence.v1.DetectedAttribute.Builder,
                com.google.cloud.videointelligence.v1.DetectedAttributeOrBuilder>(
                attributes_, ((bitField0_ & 0x00000004) != 0), getParentForChildren(), isClean());
        attributes_ = null;
      }
      return attributesBuilder_;
    }
<pre>
Optional. Attributes in the track level.
</pre>

<code>
repeated .google.cloud.videointelligence.v1.DetectedAttribute attributes = 3 [(.google.api.field_behavior) = OPTIONAL];
</code>
java-video-intelligence/proto-google-cloud-video-intelligence-v1/src/main/java/com/google/cloud/videointelligence/v1/Track.java