core/src/main/java/org/apache/commons/jelly/JellyException.java [155:184]:
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    public String getReason() {
        return super.getMessage();
    }

    // #### overload the printStackTrace methods...
    public void printStackTrace(PrintWriter s) { 
        synchronized (s) {
            super.printStackTrace(s);
            if  (cause != null) {
                s.println("Root cause");
                cause.printStackTrace(s);
            }
        }
    }
        
    public void printStackTrace(PrintStream s) {
        synchronized (s) {
            super.printStackTrace(s);
            if  (cause != null) {
                s.println("Root cause");
                cause.printStackTrace(s);
            }
        }
    }

    public void printStackTrace() {
        super.printStackTrace();
        if (cause != null) {
            System.out.println("Root cause");
            cause.printStackTrace();
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jelly-tags/junit/src/main/java/org/apache/commons/jelly/tags/junit/JellyAssertionFailedError.java [136:165]:
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    public String getReason() {
        return super.getMessage();
    }

    // #### overload the printStackTrace methods...
    public void printStackTrace(PrintWriter s) {
        synchronized (s) {
            super.printStackTrace(s);
            if  (cause != null) {
                s.println("Root cause");
                cause.printStackTrace(s);
            }
        }
    }

    public void printStackTrace(PrintStream s) {
        synchronized (s) {
            super.printStackTrace(s);
            if  (cause != null) {
                s.println("Root cause");
                cause.printStackTrace(s);
            }
        }
    }

    public void printStackTrace() {
        super.printStackTrace();
        if (cause != null) {
            System.out.println("Root cause");
            cause.printStackTrace();
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