public void AddSameUsedNamespaceTwice_Success()
 {
     using (var expression = new CSharpScript())
     {
         expression.AddUsedNamespace("System.Collections");
         expression.AddUsedNamespace("System.Collections");
         expression.GenerateCode();
         expression.Compile();
         Assert.True(true); // If we go here with no exception, we are good
     }
 }