private void ensureAnnotationMatchingResultsIsMutable() {
      if (!((bitField0_ & 0x00000020) != 0)) {
        annotationMatchingResults_ =
            new java.util.ArrayList<com.google.cloud.visionai.v1.AnnotationMatchingResult>(
                annotationMatchingResults_);
        bitField0_ |= 0x00000020;
      }
    }
<pre>
Search result annotations specified by result_annotation_keys in search
request.
</pre>

<code>repeated .google.cloud.visionai.v1.Annotation requested_annotations = 3;</code>
java-visionai/proto-google-cloud-visionai-v1/src/main/java/com/google/cloud/visionai/v1/SearchResultItem.java