@java.lang.Override
  public void writeTo(com.google.protobuf.CodedOutputStream output) throws java.io.IOException {
    if (((bitField0_ & 0x00000001) != 0)) {
      output.writeMessage(2, getScanConfig());
    }
    if (((bitField0_ & 0x00000002) != 0)) {
      output.writeMessage(3, getUpdateMask());
    }
    getUnknownFields().writeTo(output);
  }
<pre>
Required. The update mask applies to the resource. For the `FieldMask` definition,
see
https://developers.google.com/protocol-buffers/docs/reference/google.protobuf#fieldmask
</pre>

<code>.google.protobuf.FieldMask update_mask = 3 [(.google.api.field_behavior) = REQUIRED];
</code>
java-websecurityscanner/proto-google-cloud-websecurityscanner-v1alpha/src/main/java/com/google/cloud/websecurityscanner/v1alpha/UpdateScanConfigRequest.java