private void ensureNetworkInterfacesIsMutable() {
      if (!((bitField0_ & 0x00000040) != 0)) {
        networkInterfaces_ =
            new java.util.ArrayList<com.google.cloud.vmmigration.v1.NetworkInterface>(
                networkInterfaces_);
        bitField0_ |= 0x00000040;
      }
    }
<pre>
A map of network tags to associate with the VM.
</pre>

<code>repeated string network_tags = 6;</code>

@param value The bytes of the networkTags to add.
@return This builder for chaining.
java-vmmigration/proto-google-cloud-vmmigration-v1/src/main/java/com/google/cloud/vmmigration/v1/ComputeEngineTargetDefaults.java