@java.lang.Override
  public void writeTo(com.google.protobuf.CodedOutputStream output) throws java.io.IOException {
    if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(name_)) {
      com.google.protobuf.GeneratedMessageV3.writeString(output, 1, name_);
    }
    if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(description_)) {
      com.google.protobuf.GeneratedMessageV3.writeString(output, 3, description_);
    }
    if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(acceleratorType_)) {
      com.google.protobuf.GeneratedMessageV3.writeString(output, 5, acceleratorType_);
    }
    if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(ipAddress_)) {
      com.google.protobuf.GeneratedMessageV3.writeString(output, 8, ipAddress_);
    }
    if (state_ != com.google.cloud.tpu.v1.Node.State.STATE_UNSPECIFIED.getNumber()) {
      output.writeEnum(9, state_);
    }
    if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(healthDescription_)) {
      com.google.protobuf.GeneratedMessageV3.writeString(output, 10, healthDescription_);
    }
    if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(tensorflowVersion_)) {
      com.google.protobuf.GeneratedMessageV3.writeString(output, 11, tensorflowVersion_);
    }
    if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(network_)) {
      com.google.protobuf.GeneratedMessageV3.writeString(output, 12, network_);
    }
    if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(cidrBlock_)) {
      com.google.protobuf.GeneratedMessageV3.writeString(output, 13, cidrBlock_);
    }
    if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(port_)) {
      com.google.protobuf.GeneratedMessageV3.writeString(output, 14, port_);
    }
    if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(serviceAccount_)) {
      com.google.protobuf.GeneratedMessageV3.writeString(output, 15, serviceAccount_);
    }
    if (((bitField0_ & 0x00000001) != 0)) {
      output.writeMessage(16, getCreateTime());
    }
    if (((bitField0_ & 0x00000002) != 0)) {
      output.writeMessage(17, getSchedulingConfig());
    }
    for (int i = 0; i < networkEndpoints_.size(); i++) {
      output.writeMessage(21, networkEndpoints_.get(i));
    }
    if (health_ != com.google.cloud.tpu.v1.Node.Health.HEALTH_UNSPECIFIED.getNumber()) {
      output.writeEnum(22, health_);
    }
    com.google.protobuf.GeneratedMessageV3.serializeStringMapTo(
        output, internalGetLabels(), LabelsDefaultEntryHolder.defaultEntry, 24);
    if (useServiceNetworking_ != false) {
      output.writeBool(27, useServiceNetworking_);
    }
    if (apiVersion_
        != com.google.cloud.tpu.v1.Node.ApiVersion.API_VERSION_UNSPECIFIED.getNumber()) {
      output.writeEnum(38, apiVersion_);
    }
    for (int i = 0; i < symptoms_.size(); i++) {
      output.writeMessage(39, symptoms_.get(i));
    }
    getUnknownFields().writeTo(output);
  }
<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