public static IDataType RemoveDocTypeFromXPathFilter(this IDataType dataType, params string[] docTypes)
{
var preValues = dataType.GetMultiNodeTreePickerPreValues();
var docTypeListXPath = new DocTypeListXPath(preValues.AllowedDocTypes);
docTypeListXPath.Remove(docTypes);
preValues.AllowedDocTypes = docTypeListXPath.ToString();
dataType.SetMultiNodeTreePickerPreValues(preValues);
return(dataType);
}