module Raw_handler:sig..end
module T:sig..end
include T
val filter : ('a, 'b) t -> f:('a -> bool) -> ('a, 'b) tval prepend : ('a, 'b) t -> f:('c -> 'a) -> ('c, 'b) tval create_job : ('a, 'b) t -> 'a -> 'b Job.tval ounit_tests : unit -> OUnit.test