/**
* Sets the document's compression to the new 1.5 mode with object streams and xref
* streams. Be attentive!!! If you want set full compression , you should set immediately after creating PdfStamper,
* before editing the document.It can be set once and it can't be unset.
*/
virtual public void SetFullCompression()
{
if (stamper.append)
{
return;
}
stamper.fullCompression = true;
stamper.SetAtLeastPdfVersion(PdfWriter.VERSION_1_5);
}