public void write(OutputStream output) {
        PrintStream printer = new PrintStream(output, true);
        entries.forEach((section, sectionEntries) -> {
            if (!section.isEmpty()) {
                printer.printf("[%s]\n", section);
            }
            sectionEntries.forEach((key, value) -> {
                printer.printf("%s = %s\n", key, quote(value));
            });
            if (!section.equals(entries.lastKey())) {
                printer.println();
            }
        });
    }
Write the text representation of this to given output
vespajlib/src/main/java/com/yahoo/config/ini/Ini.java