Loop through all elements in a radRibbonBar

I need to loop through all controls/elements and child controls/elements on a form and disable the control/element if the Tag property = "someText".

The following code works for controls and child controls on the form, but not for radRibbonBar elements. 

=================================================
foreach (var control in GetControlHierarchy(this))
            {
                if (control.Tag != null)
                {
                    if (control.Tag.Equals("someText"))
                    {
                        control.Enabled = false;
                    }
                }
            }

 private IEnumerable<Control> GetControlHierarchy(Control root)
        {
            var queue = new Queue<Control>();

            queue.Enqueue(root);

            do
            {
                var control = queue.Dequeue();

                yield return control;

                foreach (var child in control.Controls.OfType<Control>())
                    queue.Enqueue(child);

            } while (queue.Count > 0);
        }
======================================================

How would I change the above code to include radRibbonBar elements?

Thank you,