public void TransformRecursively(ControlBuilder controlBuilder)
        {
            Require.NotNull(controlBuilder, nameof(controlBuilder));

            ArrayList subBuilders = controlBuilder.SubBuilders;

            for (int i = 0; i < subBuilders.Count; i++)
            {
                var subBuilder = subBuilders[i];
                var literal    = subBuilder as string;

                if (literal == null)
                {
                    // Transform the sub builders.
                    var controlSubBuilder = subBuilder as ControlBuilder;
                    if (controlSubBuilder != null)
                    {
                        TransformRecursively(controlSubBuilder);
                    }
                }
                else
                {
                    // Transform the literal.
                    if (literal.Length != 0)
                    {
                        subBuilders[i] = TransformLiteral(literal);
                    }
                }
            }

            foreach (TemplatePropertyEntry entry in controlBuilder.TemplatePropertyEntries)
            {
                TransformRecursively(entry.Builder);
            }

            foreach (ComplexPropertyEntry entry in controlBuilder.ComplexPropertyEntries)
            {
                TransformRecursively(entry.Builder);
            }

            ControlBuilder defaultPropertyBuilder = controlBuilder.GetDefaultPropertyBuilder();

            if (defaultPropertyBuilder != null)
            {
                TransformRecursively(defaultPropertyBuilder);
            }
        }