private static extern void _getLeaderboardScores(string leaderboardId, int offset, int count, int scoreType,
IntPtr onSuccessPtr, IntPtr onFailurePtr, StringResultCallbackDelegate callback);
private static extern void _getLeaderboardsWithOffset(int offset, int count, IntPtr onSuccessPtr,
IntPtr onFailurePtr, StringResultCallbackDelegate callback);
private static extern void _getLeaderboards(int leaderboardsCount, string[] leaderboardIdsArray,
IntPtr onSuccessPtr, IntPtr onFailurePtr, StringResultCallbackDelegate callback);
private static extern void _getLeaderboard(string leaderboardId, IntPtr onSuccessPtr, IntPtr onFailurePtr,
StringResultCallbackDelegate callback);
private static extern void _postActivity(string text, string base64image, string buttonText, string actionId,
int tagsCount, string[] tags, IntPtr onSuccessPtr, IntPtr onFailurePtr,
StringResultCallbackDelegate executeSuccessAction, CompleteCallbackDelegate executeCompleteAction);
private static extern void _getLastSave(IntPtr onSuccessPtr, IntPtr onFailurePtr,
StringResultCallbackDelegate executeSuccessAction, FailureCallbackDelegate executeCompleteAction);
