Moved all extension methods into extension blocks (#1155)

app/MindWork AI Studio/Tools/PowerPoint/LayoutPurposeAreaExtensions.cs

@@ -7,20 +7,23 @@ internal static class LayoutPurposeAreaExtensions
 {
     private static string TB(string fallbackEN) => PluginSystem.I18N.I.T(fallbackEN, typeof(LayoutPurposeAreaExtensions).Namespace, nameof(LayoutPurposeAreaExtensions));
 
-    /// <summary>
-    /// The name of the area, as the forms show it above its kinds of slides.
-    /// </summary>
     /// <param name="area">The area.</param>
-    public static string Label(this LayoutPurposeArea area) => area switch
+    extension(LayoutPurposeArea area)
     {
-        LayoutPurposeArea.FRAMING => TB("Structure and framing"),
-        LayoutPurposeArea.GENERAL => TB("General content"),
-        LayoutPurposeArea.TEACHING => TB("Teaching and workshops"),
-        LayoutPurposeArea.BUSINESS => TB("Business and projects"),
-        LayoutPurposeArea.SCIENCE => TB("Science and research"),
-        LayoutPurposeArea.MEDICINE => TB("Medicine"),
-        LayoutPurposeArea.LAW => TB("Law"),
+        /// <summary>
+        /// The name of the area, as the forms show it above its kinds of slides.
+        /// </summary>
+        public string Label() => area switch
+        {
+            LayoutPurposeArea.FRAMING => TB("Structure and framing"),
+            LayoutPurposeArea.GENERAL => TB("General content"),
+            LayoutPurposeArea.TEACHING => TB("Teaching and workshops"),
+            LayoutPurposeArea.BUSINESS => TB("Business and projects"),
+            LayoutPurposeArea.SCIENCE => TB("Science and research"),
+            LayoutPurposeArea.MEDICINE => TB("Medicine"),
+            LayoutPurposeArea.LAW => TB("Law"),
 
-        _ => TB("Other kinds of slides"),
-    };
+            _ => TB("Other kinds of slides"),
+        };
+    }
 }