private void maybeForceBuilderInitialization() {
      if (com.google.protobuf.GeneratedMessageV3.alwaysUseFieldBuilders) {
        getDefaultTtlFieldBuilder();
        getSearchCapabilitySettingFieldBuilder();
      }
    }
<pre>
Corpus is a set of media contents for management.
Within a corpus, media shares the same data schema. Search is also restricted
within a single corpus.
</pre>

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