You can search for identifiers within the package.
in-package search v0.2.0
frama-c-server.core
Kernel_ast.Position
Represented by a Json record with file, dir, basename, line
type t = Frama_c_kernel.Filepath.position
val jtype : Package.jtype
val of_json : Data.json -> t
val to_json : t -> Data.json