Abstract class not getting created as abstract

[nembogda]

openapi: 3.0.0
info: "Discount Amount"
paths:
components:
  schemas:
    DiscountAmount:
      type: object
      x-abstract: true
      properties:
        discountType:
          type: string

    ProductAnnualDiscountSettings:
      allOf:
        - $ref: '#/components/schemas/DiscountAmount'
        - type: object
          properties:
            amount:
              type: number
            type:
              $ref: "#/components/schemas/DiscountType"
            enabled:
              type: boolean
              default: false

    ECPAnnualDiscountSettings:
      allOf:
        - $ref: '#/components/schemas/DiscountAmount'
        - type: object
          properties:
            amount:
              type: number
            type:
              $ref: "#/components/schemas/DiscountType"
            enabled:
              type: boolean
              default: false

    DiscountType:
      type: string
      enum:
        - PERCENT
        - FLAT

Generates

data class DiscountAmount(
  @param:JsonProperty("discountType")
  @get:JsonProperty("discountType")
  val discountType: String? = null
)

and

data class ProductAnnualDiscountSettings(
  @param:JsonProperty("discountType")
  @get:JsonProperty("discountType")
  val discountType: String? = null,
  @param:JsonProperty("amount")
  @get:JsonProperty("amount")
  val amount: BigDecimal? = null,
  @param:JsonProperty("type")
  @get:JsonProperty("type")
  val type: DiscountType? = null,
  @param:JsonProperty("enabled")
  @get:JsonProperty("enabled")
  @get:NotNull
  val enabled: Boolean = false
)

Please note that DiscountAmount is not abstract and that ProductAnnualDiscountSettings doesn't inherit from DiscountAmount

Am I doing something wrong or abstract types are not supported?

[atollk]

x-abstract is, so far, not supported by Fabrikt. Is this what you are trying to achieve?
https://swagger.io/docs/specification/data-models/inheritance-and-polymorphism/
https://github.com/cjbooms/fabrikt/blob/master/src/test/resources/examples/polymorphicModels/api.yaml

[cjbooms]

If you want it to be polymorphic, you'll need to add a discriminator declaration in DiscountAmount