@Override
        public String toString() {
            final StringBuilder builder = new StringBuilder();
            builder.append("age=");
            builder.append(ModelStringUtil.formatDurationString(ageMs));
            builder.append(",precision=");
            builder.append(precision);
            builder.append("(e.g.");
            final long eg = (long) Math.pow(10, precision);
            builder.append(eg);
            builder.append("(e.g.");
            builder.append(ModelStringUtil.formatDurationString(eg));
            builder.append(")");
//            builder.append(",simpleCronScheduler=");
//            builder.append(simpleCronScheduler);
            return builder.toString();
        }
Used for the MySQL ROUND(number , precision) func
stroom-statistics/stroom-statistics-impl-sql/src/main/java/stroom/statistics/impl/sql/SQLStatisticAggregationTransactionHelper.java