Turned getter-like extension methods into extension properties (#1157)

app/Tests/Tools/PowerPoint/LayoutPurposeTests.cs

@@ -15,9 +15,9 @@ public sealed class LayoutPurposeTests
         {
             foreach (var purpose in Enum.GetValues<LayoutPurpose>())
             {
-                Assert.That(purpose.Label(), Is.Not.Empty, $"The kind of slide {purpose} has no label.");
-                Assert.That(purpose.Question(), Does.EndWith("?"), $"The kind of slide {purpose} has no question.");
-                Assert.That(purpose.PromptDescription(), Is.Not.Empty.And.Not.EndWith("."), $"The kind of slide {purpose} has no description, or one which ends where the rule for the model goes on.");
+                Assert.That(purpose.Label, Is.Not.Empty, $"The kind of slide {purpose} has no label.");
+                Assert.That(purpose.Question, Does.EndWith("?"), $"The kind of slide {purpose} has no question.");
+                Assert.That(purpose.PromptDescription, Is.Not.Empty.And.Not.EndWith("."), $"The kind of slide {purpose} has no description, or one which ends where the rule for the model goes on.");
             }
         }
     }
@@ -28,7 +28,7 @@ public sealed class LayoutPurposeTests
     [Test]
     public void EveryKindOfSlideHasALabelOfItsOwn()
     {
-        var labels = Enum.GetValues<LayoutPurpose>().Select(purpose => purpose.Label()).ToList();
+        var labels = Enum.GetValues<LayoutPurpose>().Select(purpose => purpose.Label).ToList();
         Assert.That(labels, Is.Unique);
     }
 
@@ -42,7 +42,7 @@ public sealed class LayoutPurposeTests
     [Test]
     public void TheKindsOfSlidesFollowTheOrderOfTheAreas()
     {
-        var areas = Enum.GetValues<LayoutPurpose>().Select(purpose => purpose.Area()).ToList();
+        var areas = Enum.GetValues<LayoutPurpose>().Select(purpose => purpose.Area).ToList();
         using (Assert.EnterMultipleScope())
         {
             Assert.That(areas, Is.Ordered, "The kinds of an area stand together, and the areas follow their own order.");