identifierName inconsistent type

[daurnimator]

I'm trying to create a custom url on an entity.
The identifierName passed to my function seems to be of different types depending on where it was called from.

I added this to the start of my function:

console.log("URL FUNC", entityName, viewType, identifierValue, identifierName)

I see in chrome's console:

URL FUNC profile ShowView a98f8790-2d53-11e6-be94-eb7602da249b e {_name: "id", _detailLink: true, _type: "string", _order: null, _label: null…}_attributes: Object_cssClasses: null_defaultValue: null_detailLink: true_detailLinkRoute: "edit"_editable: true_flattenable: true_label: null_maps: Array[0]_name: "id"_order: null_pinned: false_template: ()_templateIncludesLabel: false_transforms: Array[0]_type: "string"_validation: Objectdashboard: truelist: true__proto__: Object
URL FUNC organisation listView 54dd74c8-2d53-11e6-831e-5be6dcb88be2 organisation