ClassCastException at PDFParser:667

from "skenny" in the user mailing list:

I'm using PDFMergerUtility to merge a number of PDF input streams and write
them to an HTTP response output stream. One of the PDFs is failing at line
667 in PDFParser:

    final COSName objectType = (COSName)strmObj.getItem( COSName.TYPE );

The result of getItem(COSName.TYPE) is a COSString (value "Metadata") and
not a COSName.