/**
* Get the document associated with this cookie. It is an instance of Swing's {@link
* StyledDocument} but it should also understand the NetBeans {@link NbDocument#GUARDED} to
* prevent certain lines from being edited by the user.
*
* <p>If the document is not loaded the method blocks until it is.
*
* @return the styled document for this cookie that understands the guarded attribute
* @exception IOException if the document could not be loaded
*/
public StyledDocument openDocument() throws IOException {
return del.openDocument();
}
