public Builder addAttributes(
        com.google.cloud.videointelligence.v1p3beta1.DetectedAttribute.Builder builderForValue) {
      if (attributesBuilder_ == null) {
        ensureAttributesIsMutable();
        attributes_.add(builderForValue.build());
        onChanged();
      } else {
        attributesBuilder_.addMessage(builderForValue.build());
      }
      return this;
    }
<pre>
Optional. The attributes of the object in the bounding box.
</pre>

<code>
repeated .google.cloud.videointelligence.v1p3beta1.DetectedAttribute attributes = 3 [(.google.api.field_behavior) = OPTIONAL];
</code>
java-video-intelligence/proto-google-cloud-video-intelligence-v1p3beta1/src/main/java/com/google/cloud/videointelligence/v1p3beta1/TimestampedObject.java