public Builder mergeDnsForwarding(com.google.cloud.vmwareengine.v1.DnsForwarding value) {
      if (dnsForwardingBuilder_ == null) {
        if (((bitField0_ & 0x00000001) != 0)
            && dnsForwarding_ != null
            && dnsForwarding_
                != com.google.cloud.vmwareengine.v1.DnsForwarding.getDefaultInstance()) {
          getDnsForwardingBuilder().mergeFrom(value);
        } else {
          dnsForwarding_ = value;
        }
      } else {
        dnsForwardingBuilder_.mergeFrom(value);
      }
      if (dnsForwarding_ != null) {
        bitField0_ |= 0x00000001;
        onChanged();
      }
      return this;
    }
<pre>
Required. DnsForwarding config details.
</pre>

<code>
.google.cloud.vmwareengine.v1.DnsForwarding dns_forwarding = 1 [(.google.api.field_behavior) = REQUIRED];
</code>
java-vmwareengine/proto-google-cloud-vmwareengine-v1/src/main/java/com/google/cloud/vmwareengine/v1/UpdateDnsForwardingRequest.java