module Check_buffer_age:sig..end
typet =Writer0.writer Writer0.Check_buffer_age'.t Core.Std.Bag.Elt.t option
val dummy : 'a optionval create : t ->
maximum_age:[< `At_most of Core.Std.Time.Span.t | `Unlimited ] ->
t Writer0.Check_buffer_age'.t Core.Std.Bag.Elt.t
optionval destroy : t Writer0.Check_buffer_age'.t Core.Std.Bag.Elt.t
option -> unitval too_old : 'a Writer0.Check_buffer_age'.t Core.Std.Bag.Elt.t option ->
unit Import.Deferred.t