Opentelemetry_ambient_context_types.STORAGEval get_map : unit -> Hmap.t optionGet the hmap from the current ambient context, or None if there is no ambient context.
val with_map : Hmap.t -> (unit -> 'b) -> 'bwith_hmap h cb calls cb() in an ambient context in which get_map() will return h. Once cb() returns, the storage is reset to its previous value.
val create_key : unit -> 'a keyCreate a new storage key, guaranteed to be distinct from any previously created key.
val get : 'a key -> 'a optionval with_binding : 'a key -> 'a -> (unit -> 'b) -> 'bval without_binding : 'a key -> (unit -> 'b) -> 'b