public Builder clearRoutingConfig() {
      bitField0_ = (bitField0_ & ~0x00002000);
      routingConfig_ = null;
      if (routingConfigBuilder_ != null) {
        routingConfigBuilder_.dispose();
        routingConfigBuilder_ = null;
      }
      onChanged();
      return this;
    }
<pre>
Optional. Routing configuration.
</pre>

<code>
optional .google.cloud.vertexai.v1.GenerationConfig.RoutingConfig routing_config = 17 [(.google.api.field_behavior) = OPTIONAL];
</code>
java-vertexai/proto-google-cloud-vertexai-v1/src/main/java/com/google/cloud/vertexai/api/GenerationConfig.java