> For clean Markdown of any page, append .md to the page URL.
> For a complete documentation index, see https://docs.nvidia.com/nemo/relay/llms.txt.
> For AI client integration (Claude Code, Cursor, etc.), connect to the MCP server at https://docs.nvidia.com/nemo/relay/_mcp/server.

# Type Alias Nemo Relay Native Free Fn

> Optional destructor for user data captured by native callbacks.

Generated from `cargo doc --no-deps -p nemo-relay -p nemo-relay-adaptive -p nemo-relay-pii-redaction -p nemo-relay-ffi -p nemo-relay-types -p nemo-relay-plugin -p nemo-relay-worker-proto -p nemo-relay-worker`.

<pre />

Optional destructor for user data captured by native callbacks.

## Aliased Type

<pre />

## Variants

### `None`

<pre />

No value.

### `Some(unsafe extern "C" fn(*mut c_void))`

<pre />

Some value of type `T`.