Requires<T> pattern

Contract.Requires

public static class Contract
    {
         public static void Requires<T>(Func<bool> condition) where T : Exception, new()
         {
             if(!condition.Invoke())
             {
                 throw new T();
             }
         }
    }

#Example of using
public class A
    {

        public A(params IB[] bs)
        {
            Contract.Requires<ArgumentException>(() =>  bs != null);
         ...
        }
     }