public com.google.cloud.videointelligence.v1p2beta1.TextAnnotation.Builder
        addTextAnnotationsBuilder() {
      return getTextAnnotationsFieldBuilder()
          .addBuilder(
              com.google.cloud.videointelligence.v1p2beta1.TextAnnotation.getDefaultInstance());
    }
<pre>
OCR text detection and tracking.
Annotations for list of detected text snippets. Each will have list of
frame information associated with it.
</pre>

<code>
repeated .google.cloud.videointelligence.v1p2beta1.TextAnnotation text_annotations = 12;
</code>
java-video-intelligence/proto-google-cloud-video-intelligence-v1p2beta1/src/main/java/com/google/cloud/videointelligence/v1p2beta1/VideoAnnotationResults.java