Is it necessary to call PDDocument#close() after calling PDPageContentStream#close()? Does the answer apply all cases or only certain cases? If the latter, what certain cases?
For example, in the following code snippet: PDDocument document = new PDDocument(); PDPageContentStream cos = new PDPageContentStream(document, 0); cos.drawImage(... , etc. cos.close(); document.close(); Is the last line, `document.close()`, necessary, or has that been handled sufficiently by the `cos.close()` immediately before it? Finally, I'm assuming that it is safe to call #close() a second (or third?) time on a PDDocument or PDPageContentStream. Is that correct? My use case would be in the finally block where an exception might have left PDDocument or PDPageContentStream open. -- "Hell hath no limits, nor is circumscrib'd In one self-place; but where we are is hell, And where hell is, there must we ever be" --Christopher Marlowe, *Doctor Faustus* (v. 121-24)
