C#: Add some more generic types and methods.

Author: michaelnebel

csharp/ql/test/library-tests/extension/extensionType.expected

@@ -1,11 +1,11 @@
 extensionTypeReceiverParameter
 | extensions.cs:6:5:16:5 | extension(String) | extensions.cs:6:22:6:22 | s |
-| extensions.cs:25:5:28:5 | extension(Object)<Object> | file://:0:0:0:0 | t |
-| extensions.cs:25:5:28:5 | extension(String)<String> | file://:0:0:0:0 | t |
-| extensions.cs:25:5:28:5 | extension(T)`1 | extensions.cs:25:20:25:20 | t |
+| extensions.cs:25:5:34:5 | extension(Object)<Object> | file://:0:0:0:0 | t |
+| extensions.cs:25:5:34:5 | extension(String)<String> | file://:0:0:0:0 | t |
+| extensions.cs:25:5:34:5 | extension(T)`1 | extensions.cs:25:20:25:20 | t |
 extensionTypeExtendedType
 | extensions.cs:6:5:16:5 | extension(String) | string |
 | extensions.cs:18:5:23:5 | extension(Object) | object |
-| extensions.cs:25:5:28:5 | extension(Object)<Object> | object |
-| extensions.cs:25:5:28:5 | extension(String)<String> | string |
-| extensions.cs:25:5:28:5 | extension(T)`1 | T |
+| extensions.cs:25:5:34:5 | extension(Object)<Object> | object |
+| extensions.cs:25:5:34:5 | extension(String)<String> | string |
+| extensions.cs:25:5:34:5 | extension(T)`1 | T |

csharp/ql/test/library-tests/extension/extensions.cs

@@ -24,7 +24,13 @@ public static class MyExtensions
 
     extension<T>(T t) where T : class
     {
-        public bool GenericM() => t is not null;
+        public bool GenericProp1 => t is not null;
+        public bool GenericProp2 { get { return true; } set { } }
+        public bool GenericM1() => t is not null;
+        public void GenericM2<S>(S other) { }
+        public void GenericStaticM1() { }
+        public static void GenericStaticM2<S>(S other) { }
+        public static T operator +(T a, T b) { return null; }
     }
 }
 
@@ -76,12 +82,19 @@ public static void CallingExtensions()
         MyExtensions.get_Prop2(s);
         MyExtensions.set_Prop2(s, false);
         MyExtensions.get_StaticProp();
+    }
 
-        // Calling generic extension method
+    public static void CallingGenericExtensions()
+    {
+        var s = "Hello Generic World.";
         var o = new object();
-        o.GenericM();
-        s.GenericM();
-        MyExtensions.GenericM(o);
-        MyExtensions.GenericM(s);
+
+        // Calling generic extension method
+        o.GenericM1();
+        s.GenericM1();
+
+        // Calling the compiler generated static extension methods.
+        MyExtensions.GenericM1(o);
+        MyExtensions.GenericM1(s);
     }
 }