public virtual void RemoveOneOutlineSubtree(String DEST)
{
String input = sourceFolder + "my_output_pdf.pdf";
PdfReader reader = new PdfReader(input);
PdfWriter writer = new PdfWriter(DEST);
PdfDocument pdfDocument = new PdfDocument(reader, writer);
PdfOutline root = pdfDocument.GetOutlines(true);
PdfOutline toRemove = root.GetAllChildren().Get(0);
toRemove.RemoveOutline();
pdfDocument.Close();
}
