pub fn prepare_signed_bytes(
record: &[u8],
author: &impl IdentitySigner,
funder: &Account,
inputs: &[FundingInput],
budget: FeeBudget,
) -> Result<SignedPublicPair, Error>pub fn prepare_signed_bytes(
record: &[u8],
author: &impl IdentitySigner,
funder: &Account,
inputs: &[FundingInput],
budget: FeeBudget,
) -> Result<SignedPublicPair, Error>