The contact object witin Run object does not include urn, urn_display and annon_display

[merlos]

The output in the runs API endpoint for the contact is this:

  "contact": {
                "uuid": "f7939441-...-...-1111-111111111",
                "name": null,
                "urn": "facebook:********",
                "urn_display": null,
                "anon_display": "000000000"
            },

However, the in the Run object of the client, only the uuid and the name are included.

I believe that the cause is that in the types.py file, within the Run class definition the contact is defined as an ObjectRef

class Run(TembaObject):
    ...
   contact = ObjectField(item_class=ObjectRef)
    ...

However, the ObjectRef only has name and uuid (also defined in types.py):

class ObjectRef(TembaObject):
    """
    Used for references to objects in other objects
    """

    uuid = SimpleField()
    name = SimpleField()

Potential solution:
A specific item_class may need to be defined.