Function substrate_stellar_sdk::transaction::sign

pub fn sign(
    transaction_envelope: &mut TransactionEnvelope, 
    network: &Network, 
    keypairs: Vec<&Keypair>
) -> Result<(), SignatureError>

Generate and add signatures to a transaction envelope

Generate and add signatures to the transaction_envelope. The signature is generated for a network having the passphrase contained in network. Generate and add one signature for each keypair in keypairs.