private void maybeForceBuilderInitialization() {
        if (com.google.protobuf.GeneratedMessageV3.alwaysUseFieldBuilders) {
          getStartFieldBuilder();
          getEndFieldBuilder();
        }
      }
<pre>
The range of values [start, end) for which faceting is applied.
</pre>

Protobuf type {@code google.cloud.visionai.v1.FacetBucket.Range}
java-visionai/proto-google-cloud-visionai-v1/src/main/java/com/google/cloud/visionai/v1/FacetBucket.java