public ChangesRequiringRestart compare(Node from, Node to, String name, String comment) {
        if (!from.equals(to)) {
            report.add(new ReportLine(name, from, to, comment));
        }
        return this;
    }
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