// CS0436: The type `System.Runtime.CompilerServices.RuntimeHelpers' conflicts with the imported type of same name'. Ignoring the imported type definition // Line: 20 // Compiler options: -warn:2 -warnaserror using System.Runtime.CompilerServices; namespace System.Runtime.CompilerServices { public class RuntimeHelpers { public static void SomeMethod () { } } } class C { public static void Main () { RuntimeHelpers.SomeMethod (null); } }