[1.15.2] How to work with capabilities

[kemika1girl]

 i'm trying to add thirst system using capabilities to my mod, however i don't really understand how to do it even though i read the documentation. i already have a class which contains the thirst logic (which is pretty similar to the hunger), but how do i attach it to the player? 

[Draco18s]

If only there was some documentation about that...

[kemika1girl]

1 hour ago, Draco18s said:

If only there was some documentation about that...

well, i have read this documentation many times and now even more
in the main class i call:

public static <T> void registerCapabilities(Class<T>, Capability.IStorage<T>, Callable<? extends T>)
    {
        CapabilityManager.INSTANCE.register(IThirst.class, new ThirstStorage(), ThirstHandler::new);
    }

and get this error:

error: <identifier> expected
    public static <T> void registerCapabilities(Class<T>, Capability.IStorage<T>, Callable<? extends T>)

what does it mean?