2 using System.Linq.Expressions;
6 public static int Main ()
8 Expression<Action<IHelper>> e = (helper => helper.DoIt (null));
9 var mce = e.Body as MethodCallExpression;
10 var et = mce.Arguments[0].NodeType;
11 Console.WriteLine (et);
12 if (et != ExpressionType.Constant)
21 public interface IHelper