Function SteamAPI_ISteamTimeline_UpdateRangeTimelineEvent 

pub unsafe extern "C" fn SteamAPI_ISteamTimeline_UpdateRangeTimelineEvent(
    self_: *mut ISteamTimeline,
    ulEvent: TimelineEventHandle_t,
    pchTitle: *const c_char,
    pchDescription: *const c_char,
    pchIcon: *const c_char,
    unPriority: uint32,
    ePossibleClip: ETimelineEventClipPriority,
)