OptionSet 
The fields of the OptionSet DataType are defined in the following table:
| Name | Type |
|---|---|
| OptionSet | Structure |
| value | ByteString |
| validBits | ByteString |
The representation of the OptionSet DataType in the address space is shown in the following table:
| Name | Attribute |
|---|---|
| NodeId | i=12755 |
| NamespaceUri | http://opcfoundation.org/UA/ |
| BrowseName | OptionSet |
| IsAbstract | True |
| SubtypeOf | Structure |
| Categories | Base Info OptionSet DataType |