private com.google.protobuf.RepeatedFieldBuilderV3<
            com.google.cloud.tpu.v1.Symptom,
            com.google.cloud.tpu.v1.Symptom.Builder,
            com.google.cloud.tpu.v1.SymptomOrBuilder>
        getSymptomsFieldBuilder() {
      if (symptomsBuilder_ == null) {
        symptomsBuilder_ =
            new com.google.protobuf.RepeatedFieldBuilderV3<
                com.google.cloud.tpu.v1.Symptom,
                com.google.cloud.tpu.v1.Symptom.Builder,
                com.google.cloud.tpu.v1.SymptomOrBuilder>(
                symptoms_, ((bitField0_ & 0x00040000) != 0), getParentForChildren(), isClean());
        symptoms_ = null;
      }
      return symptomsBuilder_;
    }
<pre>
Output only. The Symptoms that have occurred to the TPU Node.
</pre>

<code>
repeated .google.cloud.tpu.v1.Symptom symptoms = 39 [(.google.api.field_behavior) = OUTPUT_ONLY];
</code>
java-tpu/proto-google-cloud-tpu-v1/src/main/java/com/google/cloud/tpu/v1/Node.java