Get a list of Identifier objects. Idenfifiers have a 1..*:1 mapping with Observations.

### Available end points:

- `/identifier/` - Will list all Results in the database
- `/identifier.json` - Will return all Results in json format
- `/identifier/<object_id>/` - Returns Results object with that id

### Available Methods:

- `GET`
- `HEAD`

### Available filters:

- `url`
- `idenfifierType`

### How to use filters:



`/identifier/?url=mst`

`/identifier.json?identifierType=ceda_abbreviation`

GET /api/v2/identifiers/4520/?format=api
HTTP 200 OK
Allow: GET, HEAD, OPTIONS
Content-Type: application/json
Vary: Accept

{
    "ob_id": 4520,
    "relatedTo": {
        "ob_id": 6892,
        "uuid": "9ffc2cb7843469b5c469cff14bf47d21",
        "short_code": "ob"
    },
    "url": "http://dx.doi.org/10.5285/9A8A0770-D7FC-4FC4-B83F-227E1170F2EB",
    "identifierType": "doi",
    "shortUrl": "https://doi.org/10/f2vwrk"
}