presto-cli/src/main/java/io/prestosql/cli/AlignedTablePrinter.java/AlignedTablePrinter/formatValue
class AlignedTablePrinter:    static String formatValue(Object o)
    {
        if (o == null) {
            return "NULL";
        }

        if (o instanceof byte[]) {
            return formatHexDump((byte[]) o, 16);
        }

        return o.toString();
    }