public static Level parse(String name) {
        Level l = nameToLevel.get(name);
        if (l != null)
            return l;

        l = uppercasedNameToLevel.get(name);
        if (l != null)
            return l;

        return UNKNOWN;
    }
Semi-Case sensitive parsing of log levels.  <b>Log levels are
in either all upper case or all lower case.  Not mixed
case. </b>. Returns static instance representing log level or
the UNKNOWN LogLevel instance.

@param name Name of loglevel in uppercase or lowercase.
@return Returns the static (immutable) LogLevel instance
        equivalent to the name given.
vespalog/src/main/java/com/yahoo/log/LogLevel.java