assumed_validation_data: RuntimeDescriptor<[para_id: number, expected_persisted_validation_data_hash: FixedSizeBinary<32>], [{
    max_pov_size: number;
    parent_head: Binary;
    relay_parent_number: number;
    relay_parent_storage_root: FixedSizeBinary<32>;
}, FixedSizeBinary<32>] | undefined>

Returns the persisted validation data for the given ParaId along with the corresponding validation code hash. Instead of accepting assumption about the para, matches the validation data hash against an expected one and yields None if they're not equal.