public int getUserIdInt() {
		try {
			return Integer.parseInt(userId);
		}
		catch (NumberFormatException nfe) {
			return 0;
		}
	}
Milliseconds since java Date epoch
@return
Ghidra/Features/Base/src/main/java/ghidra/app/util/bin/format/coff/archive/CoffArchiveMemberHeader.java