public Builder clearAutoMode() {
        if (autoModeBuilder_ == null) {
          if (routingConfigCase_ == 1) {
            routingConfigCase_ = 0;
            routingConfig_ = null;
            onChanged();
          }
        } else {
          if (routingConfigCase_ == 1) {
            routingConfigCase_ = 0;
            routingConfig_ = null;
          }
          autoModeBuilder_.clear();
        }
        return this;
      }
<pre>
Automated routing.
</pre>

<code>
.google.cloud.vertexai.v1.GenerationConfig.RoutingConfig.AutoRoutingMode auto_mode = 1;
</code>
java-vertexai/proto-google-cloud-vertexai-v1/src/main/java/com/google/cloud/vertexai/api/GenerationConfig.java