private com.google.protobuf.SingleFieldBuilderV3<
            com.google.cloud.speech.v2.Config,
            com.google.cloud.speech.v2.Config.Builder,
            com.google.cloud.speech.v2.ConfigOrBuilder>
        getConfigFieldBuilder() {
      if (configBuilder_ == null) {
        configBuilder_ =
            new com.google.protobuf.SingleFieldBuilderV3<
                com.google.cloud.speech.v2.Config,
                com.google.cloud.speech.v2.Config.Builder,
                com.google.cloud.speech.v2.ConfigOrBuilder>(
                getConfig(), getParentForChildren(), isClean());
        config_ = null;
      }
      return configBuilder_;
    }
<pre>
Required. The config to update.

The config's `name` field is used to identify the config to be updated.
The expected format is `projects/{project}/locations/{location}/config`.
</pre>

<code>.google.cloud.speech.v2.Config config = 1 [(.google.api.field_behavior) = REQUIRED];
</code>
java-speech/proto-google-cloud-speech-v2/src/main/java/com/google/cloud/speech/v2/UpdateConfigRequest.java