private boolean hasExternalRelocations() throws CancelledException {
		// if no external block then there won't be any refernces to special typeinfo in
		// external
		// block so return empty list
		if (!hasExternalBlock()) {
			return false;
		}
		Iterator<Bookmark> bookmarksIterator =
			program.getBookmarkManager().getBookmarksIterator(BookmarkType.WARNING);
		while (bookmarksIterator.hasNext()) {
			monitor.checkCancelled();
			Bookmark bookmark = bookmarksIterator.next();
			if (bookmark.getCategory().startsWith("EXTERNAL Relocation")) {
				return true;
			}
		}
		return false;
	}
Method to check to see if there are any EXTERNAL block relocations

@return true if there are any EXTERNAL block relocations in the program,
        false otherwise
@throws CancelledException if cancelled
Ghidra/Features/Decompiler/ghidra_scripts/classrecovery/RTTIGccClassRecoverer.java