setRegisterStakingKey

open fun setRegisterStakingKey(value: RegisterStakingKey): Cardano.SigningInput.Builder
open fun setRegisterStakingKey(builderForValue: Builder): Cardano.SigningInput.Builder
Optional, used in case of Staking Key registration (prerequisite for Staking)
.TW.Cardano.Proto.RegisterStakingKey register_staking_key = 6;