[C#]
    byte[] Who;

[VB.NET]
    Property Who As Byte()

[Pascal]
    property Who : ByteArray;

[C++]
    void get_Who(std::vector<uint8_t> &OutResult);
    void set_Who(const std::vector<uint8_t> &Value);

[PHP]
    string get_Who()
    void set_Who(array of byte|string|NULL $Value)

[Java]
    byte[] getWho();
    void setWho(byte[] Value);