You can search for identifiers within the package.
in-package search v0.2.0
ppx
PpxHelpers.Ctf
type t = Ppxlib.class_type_field
val method_ : loc:Ppxlib__.Import.location -> ?virt:bool -> Ppxlib__.Import.label -> Ppxlib__.Import.core_type -> Ppxlib__.Import.class_type_field
val inherit_ : loc:Ppxlib__.Import.location -> Ppxlib__.Import.class_type -> Ppxlib__.Import.class_type_field
val constraint_ : loc:Ppxlib__.Import.location -> Ppxlib__.Import.core_type -> Ppxlib__.Import.core_type -> Ppxlib__.Import.class_type_field