@java.lang.Override
  public void writeTo(com.google.protobuf.CodedOutputStream output) throws java.io.IOException {
    if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(network_)) {
      com.google.protobuf.GeneratedMessageV3.writeString(output, 1, network_);
    }
    if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(subnetwork_)) {
      com.google.protobuf.GeneratedMessageV3.writeString(output, 2, subnetwork_);
    }
    if (enableExternalIps_ != false) {
      output.writeBool(3, enableExternalIps_);
    }
    if (canIpForward_ != false) {
      output.writeBool(4, canIpForward_);
    }
    if (queueCount_ != 0) {
      output.writeInt32(6, queueCount_);
    }
    getUnknownFields().writeTo(output);
  }
<pre>
Optional. Specifies networking queue count for TPU VM instance's network
interface.
</pre>

<code>int32 queue_count = 6 [(.google.api.field_behavior) = OPTIONAL];</code>

@return The queueCount.
java-tpu/proto-google-cloud-tpu-v2alpha1/src/main/java/com/google/cloud/tpu/v2alpha1/NetworkConfig.java