public Builder addGuestAttributes(
        int index, com.google.cloud.tpu.v2alpha1.GuestAttributes value) {
      if (guestAttributesBuilder_ == null) {
        if (value == null) {
          throw new NullPointerException();
        }
        ensureGuestAttributesIsMutable();
        guestAttributes_.add(index, value);
        onChanged();
      } else {
        guestAttributesBuilder_.addMessage(index, value);
      }
      return this;
    }
<pre>
The guest attributes for the TPU workers.
</pre>

<code>repeated .google.cloud.tpu.v2alpha1.GuestAttributes guest_attributes = 1;</code>
java-tpu/proto-google-cloud-tpu-v2alpha1/src/main/java/com/google/cloud/tpu/v2alpha1/GetGuestAttributesResponse.java