Values_0.ClusterNodeSummariesSourceval to_value :
ClusterNodeSummary.t list ->
[> `List of
[> `Structure of
(string
* [> `Enum of string
| `String of ClusterInstanceGroupName.t
| `Structure of
(string * [> `Enum of string | `String of String_.t ]) list
| `Timestamp of Timestamp.t ])
list ]
list ]