Reference.InstanceVariabletype t = [ | `Resolved of Paths.Reference.Resolved.InstanceVariable.t | 
| `Root of string * [ `TInstanceVariable | `TUnknown ] | 
| `Dot of Paths.Reference.LabelParent.t * string | 
| `InstanceVariable of Paths.Reference.ClassSignature.t * Names.InstanceVariableName.t | 
 ]