@type t() :: %APM.Message.FenceStatus{
  breach_count: MAVLink.Types.uint16_t(),
  breach_mitigation: APM.Types.fence_mitigate(),
  breach_status: MAVLink.Types.uint8_t(),
  breach_time: MAVLink.Types.uint32_t(),
  breach_type: APM.Types.fence_breach()
}