title: how to create read-only pdf in itext7
body: <p>Using itext7 libraries, i am trying to create a read-only pdf with embedded attachments. I am not finding really good examples that show how to disable "save" and "save-as" buttons from the main file menu. Also, I would like to disable "add" and "save" attachments from attachment menu.</p>
  
  <p>Any help/direction with this regard is highly appreciated.</p>
  
  <p>Thanks
  SGK</p>