public com.google.cloud.tpu.v2.Symptom.Builder addSymptomsBuilder(int index) {
      return getSymptomsFieldBuilder()
          .addBuilder(index, com.google.cloud.tpu.v2.Symptom.getDefaultInstance());
    }
<pre>
Output only. The Symptoms that have occurred to the TPU Node.
</pre>

<code>
repeated .google.cloud.tpu.v2.Symptom symptoms = 39 [(.google.api.field_behavior) = OUTPUT_ONLY];
</code>
java-tpu/proto-google-cloud-tpu-v2/src/main/java/com/google/cloud/tpu/v2/Node.java