Is your feature request related to a problem? Please describe.

When an endpoint returns oneOf several different classes, currently it returns an empty object. Sample component snippet:

    ReturnedObject:
      oneOf:
        - $ref: '#/components/schemas/PolymorphicType'
        - $ref: '#/components/schemas/AnotherPolymorphicType'

Describe the solution you'd like

Support discriminators to be able to deserialize polymorphic types.