Removed System qualifier.
MODIFY
src/Chapter04.Tests/Listing04.39.Tests.cs
src/Chapter04.Tests/Listing04.39.Tests.cs
@@ -22,7 +22,7 @@ namespace AddisonWesley.Michaelis.EssentialCSharp.Chapter04.Listing04_39.Tests
{
bool eventFired = false;
Thermostat thermostat = new Thermostat();
- thermostat.PropertyChanged += (object? sender, System.EventArgs e) =>
+ thermostat.PropertyChanged += (object? sender, EventArgs e) =>
{
eventFired = true;
};

Removed System qualifier.

Co-authored-by: Kevin B <Keboo@users.noreply.github.com>