Levels (octez-shell-libs.Tezos_shell_services.Chain

val checkpoint : 
  Tezos_rpc.Context.simple ->
  ?chain:chain ->
  unit ->
  (Tezos_base.TzPervasives.Block_hash.t * int32)
    Tezos_base.TzPervasives.tzresult
    Lwt.t

val savepoint : 
  Tezos_rpc.Context.simple ->
  ?chain:chain ->
  unit ->
  (Tezos_base.TzPervasives.Block_hash.t * int32)
    Tezos_base.TzPervasives.tzresult
    Lwt.t

val caboose : 
  Tezos_rpc.Context.simple ->
  ?chain:chain ->
  unit ->
  (Tezos_base.TzPervasives.Block_hash.t * int32)
    Tezos_base.TzPervasives.tzresult
    Lwt.t