support for embedded models

[rysavyvladan]

It would be cool if the API client could generate also embedded models with tag allOf, because now is ignoring this field.

example:

definitions:
    model:
      type: "object"
      properties:
        id:
          type: "string"
        created:
          type: "integer"
        updated:
          type: "integer"
        deleted:
          type: "integer"
    customer:
      type: "object"
      allOf:
      - $ref: "#/definitions/model"
      properties:
        name:
          type: "string"
        address:
          type: "string"

[vmasek]

We should be able to cover the allOf the way it's described in docs

So the definitions like you proposed and this would use interface extend

  Dog:
    allOf:
      - $ref: '#/components/schemas/Pet'
      - type: object
        # all other properties specific to a `Dog`
        properties:
          bark:
            type: boolean
          breed:
            type: string
  Pet:
    type: object
    properties:
      pet_type:
        type: string