Values.TasksSourceval to_value :
Task.t list ->
[> `List of
[> `Structure of
(string
* [> `Enum of string
| `List of [> `String of String_.t ] list
| `Map of
([> `Enum of string ] * [> `String of Property.t ]) list
| `String of DestinationField.t
| `Structure of (string * [> `Enum of string ]) list ])
list ]
list ]