Values_3.VpcEndpointAssociationSetSourceval to_value :
Values_2.VpcEndpointAssociation.t list ->
[> `List of
[> `Structure of
(string
* [> `List of
[> `Structure of (string * [> `String of string ]) list ]
list
| `String of Values_0.String_.t
| `Structure of (string * [> `String of string ]) list ])
list ]
list ]