pub fn extract_xdm_mmr_proof(
domain_runtime_code: <PassFatPointerAndDecode<Vec<u8>> as RIType>::Inner,
opaque_extrinsic: <PassFatPointerAndDecode<Vec<u8>> as RIType>::Inner,
) -> <AllocateAndReturnByCodec<Option<Option<Vec<u8>>>> as RIType>::Inner