Imported Upstream version 3.6.0

Former-commit-id: da6be194a6b1221998fc28233f2503bd61dd9d14

mcs/errors/cs0738-2.cs

@@ -0,0 +1,25 @@
+// CS0738: `C' does not implement interface member `I2.Key.get' and the best implementing candidate `C.Key.get' return type `IB' does not match interface member return type `IA'
+// Line: 22
+
+public interface I1
+{
+	IB Key { get; }
+}
+
+public interface I2
+{
+	IA Key { get; }
+}
+
+public interface IB : IA
+{
+}
+
+public interface IA
+{
+}
+
+public class C : I1, I2
+{
+	public IB Key { get { return null; } }
+}