> For clean Markdown content of this page, append .md to this URL. For the complete documentation index, see https://buildwithfern.com/learn/llms.txt. ## 2.71.0 **`(feat):`** Add opt-in SSE stream reconnection for resumable endpoints. When an SSE endpoint is marked as resumable, the generated SDK automatically reconnects using the Last-Event-ID header. New RequestOptions fields: MaxStreamReconnectAttempts, DisableStreamReconnection. ## 2.70.0 **`(feat):`** Add support for undocumented/extra parameters: AdditionalQueryParameters from RequestOptions are now applied to all endpoints (previously only endpoints with defined query parameters would merge them). Also add ADDITIONAL\_BODY\_PROPERTIES feature to README generation.