> For clean Markdown content of this page, append .md to this URL. For the complete documentation index, see https://buildwithfern.com/learn/llms.txt. ## 4.23.2 **`(fix):`** Fix `InputStream` upload overloads on multipart endpoints that have non-file form fields. The overloads now take the generated request object and serialize every companion multipart field alongside the streamed file, instead of silently dropping them. The unused `File`-typed parameter (including `Optional`) is also removed from these signatures. When the file property is inlined onto the request object (`inline-file-properties: true`) and companion fields exist, the stream overloads are no longer generated, since the file cannot be separated from the request object.