You can search for identifiers within the package.
in-package search v0.2.0
frama-c-eva.server_api
Server_api.Callstack_requests
module JCallsite : Server.Data.S with type t = Eva.Callstack.call
module JCallstack : Server.Data.S with type t = Eva.Callstack.t
val compatible_filter : unit -> (Eva.Callstack.t -> bool) option