public async Task IndexingTransferFunctions()
        {
            using (var azureSearchService = new AzureSearchService(AzureSearchServiceName, _azureSearchApiKey))
            {
                await azureSearchService.DeleteIndexAsync(AzureTransferIndexName);

                using (var azureFunctionMessageIndexer =
                           await azureSearchService.GetOrCreateFunctionIndex <TransferFunction>(indexName: AzureTransferIndexName))
                {
                    var transferHandler =
                        new FunctionIndexTransactionHandler <TransferFunction>(azureFunctionMessageIndexer);

                    var web3            = new Web3.Web3("https://rinkeby.infura.io/v3/25e7b6dfc51040b3bfc0e47317d38f60");
                    var blockchainProxy = new BlockchainProxyService(web3);
                    var handlers        = new HandlerContainer {
                        TransactionHandler = transferHandler
                    };
                    var blockProcessor      = BlockProcessorFactory.Create(blockchainProxy, handlers);
                    var processingStrategy  = new ProcessingStrategy(blockProcessor);
                    var blockchainProcessor = new BlockchainProcessor(processingStrategy);

                    var blockRange = new BlockRange(3146684, 3146694);
                    await blockchainProcessor.ProcessAsync(blockRange);

                    await Task.Delay(TimeSpan.FromSeconds(5));

                    //ensure we have written the expected docs to the index
                    Assert.Equal(3, await azureFunctionMessageIndexer.DocumentCountAsync());
                }

                await azureSearchService.DeleteIndexAsync(AzureTransferIndexName);
            }
        }