private com.google.protobuf.RepeatedFieldBuilderV3<
            com.google.cloud.vmwareengine.v1.HcxActivationKey,
            com.google.cloud.vmwareengine.v1.HcxActivationKey.Builder,
            com.google.cloud.vmwareengine.v1.HcxActivationKeyOrBuilder>
        getHcxActivationKeysFieldBuilder() {
      if (hcxActivationKeysBuilder_ == null) {
        hcxActivationKeysBuilder_ =
            new com.google.protobuf.RepeatedFieldBuilderV3<
                com.google.cloud.vmwareengine.v1.HcxActivationKey,
                com.google.cloud.vmwareengine.v1.HcxActivationKey.Builder,
                com.google.cloud.vmwareengine.v1.HcxActivationKeyOrBuilder>(
                hcxActivationKeys_,
                ((bitField0_ & 0x00000001) != 0),
                getParentForChildren(),
                isClean());
        hcxActivationKeys_ = null;
      }
      return hcxActivationKeysBuilder_;
    }
<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