Values_0.FieldValuesSourceval to_value :
FieldValue.t list ->
[> `List of
[> `Structure of
(string
* [> `String of FieldValueId.t
| `Structure of
(string
* [> `Boolean of Boolean.t
| `Double of Double.t
| `String of FieldStringValue.t
| `Structure of 'a list ])
list ])
list ]
list ]