> For clean Markdown content of this page, append .md to this URL. For the complete documentation index, see https://buildwithfern.com/learn/llms.txt. ## 0.35.14 **`(fix):`** Fully qualify `Foundation.Data` in the generated HTTP client and test templates. When an API defined a type named `Data`, the generated top-level `Data` type shadowed `Foundation.Data` in those templates, so the request-body builder and stub helpers resolved to the wrong type and failed to compile. The remaining bare `Data` references now use `Foundation.Data`, matching the convention already used elsewhere in the runtime. **`(fix):`** Default an optional referenced request body to `nil` in the generated client method, and omit the `request` argument from snippets and wire tests when an example provides no body. Previously the parameter had no default value while snippets emitted an empty initializer for the wrapped type, so endpoints with an absent optional request body failed to compile.