public com.google.cloud.visionai.v1.StreamAnnotation.Builder getAnnotationBuilder() {
          bitField0_ |= 0x00000001;
          onChanged();
          return getAnnotationFieldBuilder().getBuilder();
        }
<pre>
Line annotation from the user.
</pre>

<code>.google.cloud.visionai.v1.StreamAnnotation annotation = 1;</code>
java-visionai/proto-google-cloud-visionai-v1/src/main/java/com/google/cloud/visionai/v1/OccupancyCountingPredictionResult.java