public Task <BigInteger> GetUint256ValueQueryAsync(byte[] key, BlockParameter blockParameter = null)
        {
            var getUint256ValueFunction = new GetUint256ValueFunction();

            getUint256ValueFunction.Key = key;

            return(ContractHandler.QueryAsync <GetUint256ValueFunction, BigInteger>(getUint256ValueFunction, blockParameter));
        }
 public Task <BigInteger> GetUint256ValueQueryAsync(GetUint256ValueFunction getUint256ValueFunction, BlockParameter blockParameter = null)
 {
     return(ContractHandler.QueryAsync <GetUint256ValueFunction, BigInteger>(getUint256ValueFunction, blockParameter));
 }