pub fn combine_partial_signatures(
pubkeys: impl IntoIterator<Item = PublicKey>,
agg_nonce: AggregatedNonce,
sighash: [u8; 32],
tweak: Option<[u8; 32]>,
sigs: &[&PartialSignature],
) -> Signaturepub fn combine_partial_signatures(
pubkeys: impl IntoIterator<Item = PublicKey>,
agg_nonce: AggregatedNonce,
sighash: [u8; 32],
tweak: Option<[u8; 32]>,
sigs: &[&PartialSignature],
) -> Signature