module Eliom_unwrap:sig..end
unwrap_id are used to identify a specific unwrapper.type unwrap_id
val id_of_int : int -> unwrap_id
val register_unwrapper : unwrap_id -> ('a -> 'b) -> unitregister_unwrapper id f register an unwrapping function f to
be called when a value is marked with the id idval unwrap_js : Js.js_string Js.t -> 'aunwrap_js_var v execute unwrap on the content of the javascript
variable v