You can search for identifiers within the package.
in-package search v0.2.0
capnp
RWC.ListStorage
type !'cap t = 'cap RWM.ListStorage.t = {
storage : 'cap Slice.t;
storage_type : Capnp__.ListStorageType.t;
num_elements : int;
}
val readonly : 'cap t -> Capnp__MessageSig.ro t