Function steamworks_sys::SteamAPI_ISteamApps_GetDlcDownloadProgress

pub unsafe extern "C" fn SteamAPI_ISteamApps_GetDlcDownloadProgress(
    self_: *mut ISteamApps, 
    nAppID: AppId_t, 
    punBytesDownloaded: *mut uint64, 
    punBytesTotal: *mut uint64
) -> bool