Optionalcurrentcurrent slot.
OptionalodometerOptionalpayerTransaction fee payer. Used by secp256r1/secp256k1 authorities to ensure the payer account is marked as a signer before computing the message hash, matching the Solana runtime behavior. See https://github.com/anagrambuild/swig-ts/issues/107
OptionalpostInstructions to append after the swig instruction.
OptionalpreInstructions to prepend before the swig instruction.
Optionalsigning
Options used for constructing or signing instruction data.