public Task <BigInteger> GetInt256ValueQueryAsync(byte[] key, BlockParameter blockParameter = null)
        {
            var getInt256ValueFunction = new GetInt256ValueFunction();

            getInt256ValueFunction.Key = key;

            return(ContractHandler.QueryAsync <GetInt256ValueFunction, BigInteger>(getInt256ValueFunction, blockParameter));
        }
 public Task <BigInteger> GetInt256ValueQueryAsync(GetInt256ValueFunction getInt256ValueFunction, BlockParameter blockParameter = null)
 {
     return(ContractHandler.QueryAsync <GetInt256ValueFunction, BigInteger>(getInt256ValueFunction, blockParameter));
 }