Reference.Constructor
type t = [
| `Resolved of Paths.Reference.Resolved.Constructor.t |
| `Root of string * [ `TConstructor | `TExtension | `TException | `TUnknown ] |
| `Dot of Paths.Reference.LabelParent.t * string |
| `Constructor of Paths.Reference.DataType.t * Names.ConstructorName.t |
| `Extension of Paths.Reference.Signature.t * Names.ExtensionName.t |
| `Exception of Paths.Reference.Signature.t * Names.ExceptionName.t |
]