Rollup_node_follower (octez-evm-node-libs.Evm_node_lib_dev.Rollup_node

val start : 
  keep_alive:bool ->
  ?on_new_head:(unit -> unit Tezos_base.TzPervasives.tzresult Lwt.t) ->
  rollup_node_endpoint:Uri.t ->
  unit ->
  unit

start ~keep_alive ?on_new_head ~rollup_node_endpoint () starts the rollup node follower. When on_new_head is given then it's call at each received block.