public static Severity getSeverity(final String displayValue) {
        if (NullSafe.isBlankString(displayValue)) {
            return null;
        } else {
            return NAME_TO_SEVERITY_MAP.get(displayValue.trim().toLowerCase());
        }
    }
Array of severities in descending order of importance, i.e. FATAL_ERROR first
stroom-util-shared/src/main/java/stroom/util/shared/Severity.java