Function steamworks_sys::SteamAPI_ISteamUGC_StartItemUpdate

pub unsafe extern "C" fn SteamAPI_ISteamUGC_StartItemUpdate(
    self_: *mut ISteamUGC, 
    nConsumerAppId: AppId_t, 
    nPublishedFileID: PublishedFileId_t
) -> UGCUpdateHandle_t