Function dds_stream_check_optimize 

pub unsafe extern "C" fn dds_stream_check_optimize(
    desc: *const dds_cdrstream_desc,
    xcdr_version: dds_cdr_enc_version,
) -> usize

@brief Check whether a descriptor can use optimized direct-copy serialization. @component cdr_serializer

@param desc CDR stream descriptor to inspect @param xcdr_version XCDR version for the optimization check @returns optimized serialized size, or 0 when not optimizable