#[export_wxf]Expand description
Annotate a function for export via the WXF (typed-arg) ABI. The wrapper
reads a ByteArray MArgument containing a WXF-encoded payload,
deserializes via FromWolfram, calls the user function, serializes the
return value, and writes a ByteArray MArgument back. Re-exported by
wolfram-export-wxf as export.