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); }