Creating a data pipeline with multiple blocks

One of the biggest advantages of using dataflow blocks is the ability to link them and create a complete workflow or data pipeline. In the previous section, we saw how this linking worked between producer and consumer blocks. In this section, we will create a console application with a pipeline of five dataflow blocks all linked together to complete a series of tasks. We will leverage TransformBlock, TransformManyBlock, and ActionBlock to take an RSS feed and output a list of categories that are unique across all blog posts in the feed. Follow these steps:

1. Start by creating a new .NET 6 console application in Visual Studio named OutputBlogCategories.
2. Add the System.ComponentModel.Syndication NuGet package that we used in the previous example.
3. Add the same RssFeedService class from the previous example. You can right-click on the project in Solution Explorer and select Add | Existing Item or you can create a new class named...