in 2021.2/CSharp20212/SourceGenerators/UseAutoNotifyGenerator.cs [18:30]
public static void Run()
{
var person = new PersonViewModel();
var name = person.Name;
Console.WriteLine($"FirstName = {name}");
Console.WriteLine($"Age = {person.Age}");
person.PropertyChanged += (_, e)
=> Console.WriteLine($"Property {e.PropertyName} was changed");
person.Age++;
Console.WriteLine($"Age = {person.Age}");
}