public Builder addTextAnnotations(
        int index,
        com.google.cloud.videointelligence.v1p2beta1.TextAnnotation.Builder builderForValue) {
      if (textAnnotationsBuilder_ == null) {
        ensureTextAnnotationsIsMutable();
        textAnnotations_.add(index, builderForValue.build());
        onChanged();
      } else {
        textAnnotationsBuilder_.addMessage(index, builderForValue.build());
      }
      return this;
    }
<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