def get_transaction_result(
            self,
            transaction: BaseOrSpoofTransaction,
            at_header: BlockHeader) -> bytes:
        """
        Return the result of running the given transaction.
        This is referred to as a `call()` in web3.
        """
        with self.get_vm(at_header).state_in_temp_block() as state:
            computation = state.costless_execute_transaction(transaction)

        computation.raise_if_error()
        return computation.output
Return the result of running the given transaction.
        This is referred to as a `call()` in web3.