private com.google.protobuf.SingleFieldBuilderV3<
            com.google.cloud.vmmigration.v1.ApplianceVersion,
            com.google.cloud.vmmigration.v1.ApplianceVersion.Builder,
            com.google.cloud.vmmigration.v1.ApplianceVersionOrBuilder>
        getNewDeployableApplianceFieldBuilder() {
      if (newDeployableApplianceBuilder_ == null) {
        newDeployableApplianceBuilder_ =
            new com.google.protobuf.SingleFieldBuilderV3<
                com.google.cloud.vmmigration.v1.ApplianceVersion,
                com.google.cloud.vmmigration.v1.ApplianceVersion.Builder,
                com.google.cloud.vmmigration.v1.ApplianceVersionOrBuilder>(
                getNewDeployableAppliance(), getParentForChildren(), isClean());
        newDeployableAppliance_ = null;
      }
      return newDeployableApplianceBuilder_;
    }
<pre>
The newest deployable version of the appliance.
The current appliance can't be updated into this version, and the owner
must manually deploy this OVA to a new appliance.
</pre>

<code>.google.cloud.vmmigration.v1.ApplianceVersion new_deployable_appliance = 1;</code>
java-vmmigration/proto-google-cloud-vmmigration-v1/src/main/java/com/google/cloud/vmmigration/v1/AvailableUpdates.java