sponsored
open suspend override fun sponsoredTransaction(ptb: <Error class: unknown class>, sender: <Error class: unknown class>, expiration: <Error class: unknown class>): <Error class: unknown class><<Error class: unknown class>, <Error class: unknown class>>
open suspend override fun sponsoredTransaction(ptb: <Error class: unknown class>, sender: String, expiration: <Error class: unknown class>): <Error class: unknown class><<Error class: unknown class>, <Error class: unknown class>>