A module internal to Incremental. Users should see Incremental_intf.
An At_intervals.t is a kind of DAG node that changes at a regular time interval.
include module type of sig ... endtype t = Incremental_kernel__Types.At_intervals.t = {| main : unit Incremental_kernel__Types.Node.t; | 
| base : Incremental_kernel__.Import.Time_ns.t; | 
| interval : Incremental_kernel__.Import.Time_ns.Span.t; | 
| mutable alarm : Incremental_kernel__Types.Alarm.t; | 
}include Incremental_kernel__.Sexp_of.S with type t := tinclude sig ... endval sexp_of_t : t ‑> Sexplib.Sexp.t