enum UnicodeVersion {
        Unicode_Unassigned,    // ### Qt 5: assign with some constantly big value
        Unicode_1_1,
        Unicode_2_0,
        Unicode_2_1_2,
        Unicode_3_0,
        Unicode_3_1,
        Unicode_3_2,
        Unicode_4_0,
        Unicode_4_1,
        Unicode_5_0
    };