LOG.debug("deleting overflow page");
		public void delete() throws IOException {			LOG.debug("deleting overflow page");			Page page = firstPage;			long np;			while (page != null) {				page.read();				LOG.debug("removing overflow page " + page.getPageNum());				np = page.getPageHeader().getNextPage();				unlinkPages(page);				page = np > -1 ? getPage(np) : null;			}		}