You can search for identifiers within the package.
in-package search v0.2.0
stdune
Option.List
val all : 'a option list -> 'a list option
val traverse : 'a list -> f:('a -> 'b option) -> 'b list option
Like all (List.map t ~f) but short-circuits on the first None.
all (List.map t ~f)
None