[C#]
    Object GetItem(byte[] Key);
    Object GetItem(string Key);

[VB.NET]
    Function GetItem(ByVal Key As Byte()) As Object
    Function GetItem(ByVal Key As String) As Object

[Pascal]
    under development

[C++]
    TObjectHandle GetItem(const std::vector<uint8_t> &Key);
    TObjectHandle GetItem(const std::string &Key);

[PHP]
    TObject GetItem(array of byte|string|NULL $Key)
    TObject GetItem(string $Key)

[Java]
    TObject getItem(String Key);
    TObject getItem(byte[] Key);