Values_0.FieldSourceDescribes the name and data type at a field.
type nonrec t = {name : FieldName.t option;The name of the field.
*)type_ : FieldType.t option;The data type of the field.
*)}val to_value :
t ->
[> `Structure of
(string * [> `Enum of string | `String of FieldName.t ]) list ]