void vlclua_set_this( lua_State *, vlc_object_t * );
#define vlclua_set_this(a, b) vlclua_set_this(a, VLC_OBJECT(b))
vlc_object_t * vlclua_get_this( lua_State * );
void vlclua_set_this( lua_State *, vlc_object_t * );
#define vlclua_set_this(a, b) vlclua_set_this(a, VLC_OBJECT(b))
vlc_object_t * vlclua_get_this( lua_State * );