public class test
{
   public static void TestOfNullConditionalOperator()
   {
      string s = "Test";

      if (s ?. Length > 0)
      {
         s = "Test";
      }
      if (System . Reflection . Assembly . GetEntryAssembly() ?. GetName() != null)
      {
         s = "Test";
      }
   }
}