public Builder mergeFullTextAnnotation(com.google.cloud.vision.v1p2beta1.TextAnnotation value) {
      if (fullTextAnnotationBuilder_ == null) {
        if (((bitField0_ & 0x00000020) != 0)
            && fullTextAnnotation_ != null
            && fullTextAnnotation_
                != com.google.cloud.vision.v1p2beta1.TextAnnotation.getDefaultInstance()) {
          getFullTextAnnotationBuilder().mergeFrom(value);
        } else {
          fullTextAnnotation_ = value;
        }
      } else {
        fullTextAnnotationBuilder_.mergeFrom(value);
      }
      if (fullTextAnnotation_ != null) {
        bitField0_ |= 0x00000020;
        onChanged();
      }
      return this;
    }
<pre>
If present, text (OCR) detection or document (OCR) text detection has
completed successfully.
This annotation provides the structural hierarchy for the OCR detected
text.
</pre>

<code>.google.cloud.vision.v1p2beta1.TextAnnotation full_text_annotation = 12;</code>
java-vision/proto-google-cloud-vision-v1p2beta1/src/main/java/com/google/cloud/vision/v1p2beta1/AnnotateImageResponse.java