cfg := config{}

h, err := harvester.New(&cfg).
  WithConsulSeed("127.0.0.1:8500", "", "", 0).
  Create()
if err != nil {
  log.Fatalf("failed to create harvester: %v", err)
}

err = h.Harvest(ctx)
if err != nil {
  log.Fatalf("failed to harvest configuration: %v", err)
}