@java.lang.Override
  public void writeTo(com.google.protobuf.CodedOutputStream output) throws java.io.IOException {
    for (int i = 0; i < searchResultItems_.size(); i++) {
      output.writeMessage(1, searchResultItems_.get(i));
    }
    if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(nextPageToken_)) {
      com.google.protobuf.GeneratedMessageV3.writeString(output, 2, nextPageToken_);
    }
    for (int i = 0; i < facetResults_.size(); i++) {
      output.writeMessage(3, facetResults_.get(i));
    }
    getUnknownFields().writeTo(output);
  }
<pre>
Facet search results of a given query, which contains user's
already-selected facet values and updated facet search results.
</pre>

<code>repeated .google.cloud.visionai.v1.FacetGroup facet_results = 3;</code>
java-visionai/proto-google-cloud-visionai-v1/src/main/java/com/google/cloud/visionai/v1/SearchAssetsResponse.java