> This page is for SDKs, 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.

## 5.4.0-rc.0

**`(feat):`** Upgrade to IR v66 which compresses the IR Name type, reducing IR size and increasing performance.

## 5.3.11

**`(fix):`** Fix duplicate keyword arguments in generated code for discriminated union
request bodies with stream condition properties. When a union variant inherits
the stream condition field from a base schema via extends, the property was
emitted twice — once from the union's base properties and once from the
variant's extended properties — causing SyntaxError in generated Python code.

**`(fix):`** Escape triple quotes in docstrings to prevent premature docstring termination
when OpenAPI descriptions contain Python code examples with triple-quoted strings.

**`(fix):`** Fix mypy call-overload errors in exported client wrapper by mirroring the
base client's @overload signatures and using \*\*kwargs pass-through, instead
of suppressing the error with a type: ignore comment.

## 5.3.10

**`(chore):`** Bump generator-cli to 0.9.6 which upgrades @fern-api/replay to 0.10.3.

## 5.3.9

**`(chore):`** Bump generator-cli to 0.9.5 which upgrades @fern-api/replay to 0.10.2.