Converts some important chars (int) to the corresponding html string

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   Converts some important chars (int) to the corresponding html string
  
    static String conv2Html(int i) {
        if (i == '&') return "&";
        else if (i == '<') return "<";
        else if (i == '>') return ">";
        else if (i == '"') return """;
        else return "" + (char) i;
    }

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