An excellent example of how we can use Roslyn to create Visual Studio
Extensions, and not only code fixes and analyzers. Furthermore, the
provided analyzers can "smooth" the work with C# 8.0 language
feature - nullable reference types - by suppressing some false positives
given by the compiler. Very useful.

From now on, we will consistently use the imperative form in the subject
line. For example, "Add ..." instead of "Adds ...".