private int handleException(String message, Exception exception, boolean debugMode) {
        stdError.println(message);
        if (debugMode) {
            exception.printStackTrace(stdError);
        }
        return 1;
    }
Primary application entry point for security utility tools. Handles tool selection,
CLI argument parsing and exception printing.

Based on previous vespa-security-env tool.

@author vekterli
@author bjorncs
vespaclient-java/src/main/java/com/yahoo/vespa/security/tool/Main.java