private com.google.protobuf.SingleFieldBuilderV3<
            com.google.cloud.visionai.v1.ClusterInfo,
            com.google.cloud.visionai.v1.ClusterInfo.Builder,
            com.google.cloud.visionai.v1.ClusterInfoOrBuilder>
        getClusterInfoFieldBuilder() {
      if (clusterInfoBuilder_ == null) {
        clusterInfoBuilder_ =
            new com.google.protobuf.SingleFieldBuilderV3<
                com.google.cloud.visionai.v1.ClusterInfo,
                com.google.cloud.visionai.v1.ClusterInfo.Builder,
                com.google.cloud.visionai.v1.ClusterInfoOrBuilder>(
                getClusterInfo(), getParentForChildren(), isClean());
        clusterInfo_ = null;
      }
      return clusterInfoBuilder_;
    }
<pre>
Other information of the cluster client may be interested.
</pre>

<code>.google.cloud.visionai.v1.ClusterInfo cluster_info = 3;</code>
java-visionai/proto-google-cloud-visionai-v1/src/main/java/com/google/cloud/visionai/v1/HealthCheckResponse.java