PageInfo uses strings under object instances

[boyvinall]

Requesting https://deviceserver.creatordev.io/clients/client/objecttypes/object/instances gives a PageInfo which has strings, not integers:

{
    "Links": [
        {
            "rel": "add",
            "href": "https://deviceserver.creatordev.io/clients/mxYicHnSuEKsjJ3H2bHkxw/objecttypes/vOhduQKdtUyHbUHOzGbt9Q/instances"
        }
    ],
    "PageInfo": {
        "TotalCount": "1",
        "ItemsCount": "1",
        "StartIndex": "0"
    },
    "Items": [
        {
...

elsewhere, the TotalCount, ItemsCount and StartIndex are integer values.