in core/src/main/java/org/apache/jsieve/commands/extensions/Log.java [130:145]
protected void log(String logLevel, String message, SieveContext context)
throws SyntaxException {
if (logLevel.equals(INFO_TAG))
logInfo(message);
else if (logLevel.equals(ERROR_TAG))
logError(message);
else if (logLevel.equals(WARN_TAG))
logWarn(message);
else if (logLevel.equals(DEBUG_TAG))
logDebug(message);
else if (logLevel.equals(TRACE_TAG))
logTrace(message);
else
throw context.getCoordinate().syntaxException(
new StringBuilder("Unsupported logging level: ").append(logLevel).toString());
}