> For clean Markdown content of this page, append .md to this URL. For the complete documentation index, see https://buildwithfern.com/learn/llms.txt. ## 1.46.3 **`(fix):`** Generated `raw_client.go` now sets `ResponseIsOptional: true` in `CallParams` for endpoints whose success response body is optional — e.g. an operation that returns both a body-bearing 2xx and a 204 No Content. Previously the field was never emitted, so a real 204 (empty body) hit `io.EOF` in the caller and surfaced as an error instead of a successful, nil-bodied response.