public static void TransformPartToSingleCharacterRuns(OpenXmlPart part)
{
// After transforming to single character runs, Rsid info will be invalid, so
// remove from the part.
XElement root = part.GetXElement();
var newRoot = (XElement)RemoveRsidTransform(root);
newRoot = (XElement)SingleCharacterRunTransform(newRoot);
root.ReplaceWith(newRoot);
part.PutXElement();
}