public Builder setSubnet(com.google.cloud.vmwareengine.v1.Subnet.Builder builderForValue) {
      if (subnetBuilder_ == null) {
        subnet_ = builderForValue.build();
      } else {
        subnetBuilder_.setMessage(builderForValue.build());
      }
      bitField0_ |= 0x00000002;
      onChanged();
      return this;
    }
<pre>
Required. Subnet description.
</pre>

<code>
.google.cloud.vmwareengine.v1.Subnet subnet = 2 [(.google.api.field_behavior) = REQUIRED];
</code>
java-vmwareengine/proto-google-cloud-vmwareengine-v1/src/main/java/com/google/cloud/vmwareengine/v1/UpdateSubnetRequest.java