Show "All" (google) leaderboard by default

Hi,
There is this function inside GamesClass.Leaderboards that sets the google leaderboard, but i don’t know what values to put instead of timeSpan and collection so it will be timeSpan= all times and collection= all (not social), can anyone help me?

The function:
GetLeaderboardIntent(GoogleApiClient apiClient, string leaderboardId, int timeSpan, int collection)