public async Task testGetBlock()
        {
            Block block = await BlocksApi.getBlock(3395);

            block.Height.ShouldBe(3395);
            block.Transactions.Count.ShouldBe(1);
        }
        public async Task testGetBlockByTransactionId()
        {
            IList <int> list = await BlocksApi.getBlocksByTransactionIdAsync("4957744b3ac54434b8270f2c854cc1040228c82ea4e72d66d2887a4d3e30b317");

            list.Count.ShouldBe(1);
        }