JSON generated from One Of is broken in Refract

[honzajavorek]

Hello gentlemen, Dredd user reports problems with One Of in apiaryio/dredd#439. Sample blueprint:

# GET /
+ Response 200 (application/json)
    + Attributes (jsonTaskBase)

# Data Structures
## jsonTaskBase (object)
+ recurrence (jsonRecurrence)

## jsonRecurrence (object)
+ One of
    + numberOfOccurences: 5 (number)
    + endDate: `2015-04-08T12:30:00Z` (string)
+ One of
    + month: `march` (string)
    + interval: 1 (number)

Output:

{
  "recurrence": {
    "": [
      [
        "march"
      ],
      [
        1
      ]
    ]
  }
}

Expected output:

{
  "recurrence": {
    "numberOfOccurences": 5,
    "month": "march"
  }
}

[klokane]

seems to be #200 related

[pksunkara]

Fixed by #307