> This page is for SDK, version Legacy.
> For other versions, use one of these documentation indexes:
> - Current (default): https://buildwithfern.com/learn/sdks/current/llms.txt
> - Legacy: https://buildwithfern.com/learn/sdks/legacy/llms.txt

> For clean Markdown content of this page, append .md to this URL. For the complete documentation index, see https://buildwithfern.com/learn/llms.txt.

## 1.60.0

**`(feat):`** Add XML support for xml-encoded object types (e.g. TwiML). Generated types gain
`ToXml()`/`ToXmlElement()`, `<Type>FromXml(string)`/`<Type>FromXmlElement(...)`,
fluent child builders (e.g. `response.Say(...)`, `Add`-prefixed on collision), and
`ExtraAttributes`/`ExtraChildren` to round-trip unknown attributes and elements.
A standard-library `core/xml.go` runtime is emitted only when xml-encoded types exist.