private static String formatValue(String indent, Node n) {
            String str = n.toString();
            if (str.contains("\n")) {  // Struct
                str = "\n" + indent + "  { " + str.replace("\n", "\n" + indent + "    ") + " }";
            }
            return str;
        }
This class aggregates information about config changes that causes a restart to be required.

@author Magnar Nedland
config-lib/src/main/java/com/yahoo/config/ChangesRequiringRestart.java