@Override
    public int hashCode() {
        final int prime = 31;
        int result = 1;
        result = prime * result + ((timeAgnosticStatisticEvent == null)
                ? 0
                : timeAgnosticStatisticEvent.hashCode());
        result = prime * result + (int) (timeMs ^ (timeMs >>> 32));
        return result;
    }
Convenience method for extracting the value of a tag in this statistic event

@param tagName The name of the tag to extract
@return The value of the named tag
stroom-statistics/stroom-statistics-impl-sql/src/main/java/stroom/statistics/impl/sql/StatisticEvent.java