Count the number of stewards added to the pool transaction store
        Note: This is inefficient, a production use case of this function
        should require an efficient storage mechanism

def countStewards(self) -> int:
        """
        Count the number of stewards added to the pool transaction store
        Note: This is inefficient, a production use case of this function
        should require an efficient storage mechanism
        """
        # THIS SHOULD NOT BE DONE FOR PRODUCTION
        return sum(1 for _, txn in self.ledger.getAllTxn() if
                   (get_type(txn) == NYM) and (get_payload_data(txn).get(ROLE) == STEWARD))