Provides a `GET` endpoint to return postal code matchers
as well as examples by parsing localization from a session.

GET /en-sg/api/locations/countries/postal-code-matchers
HTTP 200 OK
Allow: GET, HEAD, OPTIONS
Content-Type: application/json
Vary: Accept

{
    "matchers": [
        "^(^\\d{6}$)$"
    ],
    "examples": "546080, 308125, 408600"
}