Values.MetricDataSourceval to_value :
MetricDatum.t list ->
[> `List of
[> `Structure of
(string
* [> `Double of Double.t
| `Enum of string
| `List of
[> `Structure of (string * [> `String of String_.t ]) list ]
list
| `String of String_.t
| `Structure of
(string * [> `Double of Double.t | `Integer of Integer.t ])
list
| `Timestamp of Timestamp.t ])
list ]
list ]