allOf not expanded

[davebullet]

Not all allOf properties are instanced / expanded:

eg. for the following definitions:

personAob:
type: object
allOf:
- $ref: "#/definitions/person"
- type: object
properties:
jobTitle:
type: string
contactAddress:
$ref: "#/definitions/address"
mailingAddress:
$ref: "#/definitions/address"

the person properties are instanced, and so is jobTitle - but contactAddress and mailingAddress are missing from the JSON output. For this definition:

  myPersonOrAob:
    $ref: "#/definitions/personAob"

Only these properties are generated (note missing mailingAddress and contactAddress):

			"myPersonOrAob": {
				"firstName": "enim adipisicing proident pariatur in",
				"middleNames": "est quis occaecat in eiusmod",
				"lastName": "veniam officia incididunt ut",
				"fullName": "in sunt anim",
				"phoneCountryCode": "nulla sunt ut exercitation commodo",
				"phone": "eiusmod non labore",
				"faxCountryCode": "Ut id dolore laboris",
				"fax": "esse sunt sit sed irure",
				"dateOfBirth": "1901-12-13",
				"email": "zFdRBs0P3d@dvqtRSdykBqLxBnDTkhuzGxsYcxLZqRA.zpip",
				"jobTitle": "dolor"
			},