public com.google.protobuf.ByteString getApplianceInfrastructureVersionBytes() {
      java.lang.Object ref = applianceInfrastructureVersion_;
      if (ref instanceof String) {
        com.google.protobuf.ByteString b =
            com.google.protobuf.ByteString.copyFromUtf8((java.lang.String) ref);
        applianceInfrastructureVersion_ = b;
        return b;
      } else {
        return (com.google.protobuf.ByteString) ref;
      }
    }
<pre>
Output only. Appliance OVA version.
This is the OVA which is manually installed by the user and contains the
infrastructure for the automatically updatable components on the appliance.
</pre>

<code>
string appliance_infrastructure_version = 13 [(.google.api.field_behavior) = OUTPUT_ONLY];
</code>

@return The bytes for applianceInfrastructureVersion.
java-vmmigration/proto-google-cloud-vmmigration-v1/src/main/java/com/google/cloud/vmmigration/v1/DatacenterConnector.java