fun input(stateLabel: String): <ERROR CLASS>Looks up the output label and adds the found state as an input.
stateLabel - The label of the output state specified when calling TransactionDSLInterpreter._output and friends.fun input(state: ContractState): UnitCreates an LedgerDSLInterpreter._unverifiedTransaction with a single output state and adds its reference as an input to the current transaction.
state - The state to be added.fun input(stateClosure: () -> ContractState): Unit