Function build_assembled_sig 

pub async fn build_assembled_sig<TYPES: NodeType, V: Versions, VOTE: Vote<TYPES>, CERT: Certificate<TYPES, VOTE::Commitment, Voteable = VOTE::Commitment>, DATAType: Committable + Clone + Eq + Hash + Serialize + Debug + 'static>(
    data: &DATAType,
    epoch_membership: &EpochMembership<TYPES>,
    view: TYPES::View,
    upgrade_lock: &UpgradeLock<TYPES, V>,
) -> <TYPES::SignatureKey as SignatureKey>::QcType

create signature

Panics

if fails to convert node id into keypair