usage tracking
public static SteamAPICall_t StartPlaytimeTracking(PublishedFileId_t[] pvecPublishedFileID, uint unNumPublishedFileIDs) { InteropHelp.TestIfAvailableGameServer(); return (SteamAPICall_t)NativeMethods.ISteamGameServerUGC_StartPlaytimeTracking(pvecPublishedFileID, unNumPublishedFileIDs); }