public com.google.cloud.vmwareengine.v1.HcxActivationKey.Builder addHcxActivationKeysBuilder(
        int index) {
      return getHcxActivationKeysFieldBuilder()
          .addBuilder(
              index, com.google.cloud.vmwareengine.v1.HcxActivationKey.getDefaultInstance());
    }
<pre>
List of HCX activation keys.
</pre>

<code>repeated .google.cloud.vmwareengine.v1.HcxActivationKey hcx_activation_keys = 1;</code>
java-vmwareengine/proto-google-cloud-vmwareengine-v1/src/main/java/com/google/cloud/vmwareengine/v1/ListHcxActivationKeysResponse.java