public com.google.cloud.visionai.v1.Index.Builder getIndexBuilder() {
      bitField0_ |= 0x00000001;
      onChanged();
      return getIndexFieldBuilder().getBuilder();
    }
<pre>
Required. The resource being updated.
</pre>

<code>.google.cloud.visionai.v1.Index index = 1 [(.google.api.field_behavior) = REQUIRED];
</code>
java-visionai/proto-google-cloud-visionai-v1/src/main/java/com/google/cloud/visionai/v1/UpdateIndexRequest.java