Now some essential properties, methods, and enum are still marked @beta. (essential especially for language bindings e.g. C#)
e.g. In Efl.Ui.Win, @property win_type, enum Efl.Ui.Win_Type, @property autohide, ... are still marked @beta.
We need to decide if we remove those @beta or keep those @beta.
Because if there is a specific reason why we need to keep those @beta, then EFL C# should not open those APIs.