private com.google.protobuf.SingleFieldBuilderV3<
            com.google.cloud.vmwareengine.v1.NetworkPolicy.NetworkService,
            com.google.cloud.vmwareengine.v1.NetworkPolicy.NetworkService.Builder,
            com.google.cloud.vmwareengine.v1.NetworkPolicy.NetworkServiceOrBuilder>
        getExternalIpFieldBuilder() {
      if (externalIpBuilder_ == null) {
        externalIpBuilder_ =
            new com.google.protobuf.SingleFieldBuilderV3<
                com.google.cloud.vmwareengine.v1.NetworkPolicy.NetworkService,
                com.google.cloud.vmwareengine.v1.NetworkPolicy.NetworkService.Builder,
                com.google.cloud.vmwareengine.v1.NetworkPolicy.NetworkServiceOrBuilder>(
                getExternalIp(), getParentForChildren(), isClean());
        externalIp_ = null;
      }
      return externalIpBuilder_;
    }
<pre>
Network service that allows External IP addresses to be assigned to VMware
workloads. This service can only be enabled when `internet_access` is also
enabled.
</pre>

<code>.google.cloud.vmwareengine.v1.NetworkPolicy.NetworkService external_ip = 7;</code>
java-vmwareengine/proto-google-cloud-vmwareengine-v1/src/main/java/com/google/cloud/vmwareengine/v1/NetworkPolicy.java