// CS0121: The call is ambiguous between the following methods or properties: `A.B.X.Test(int)' and `A.C.X.Test(int)' // Line: 31 using static A.B.X; using static A.C.X; namespace A.B { static class X { public static void Test (int o) { } } } namespace A.C { static class X { public static int Test (int o) { } } } class M { public static void Main () { Test (0); } }