Polymorphic responses in Python Client Side

Code generation for the response of a method that has multiple possible accepted response schemas is broken in generated python code. I have a GET method that is supposed utilize 3.0's polymorphic capabilities by having a response that should return "oneOf" 3 types of schemas. My response looks like this:

components:
  responses:
    RunResponse:
      description: different response types for Runs
      content:
        application/json:
          schema:
            oneOf:
            - $ref: '#/components/schemas/AllRun'
            - $ref: '#/components/schemas/IonRun'
            - $ref: '#/components/schemas/IllRun'

But in the response type in the generated code it is looking for this: 

When ran with this as the response type I get an error as there is no model of "OneOfAllRunsIonRunsIllruns". How can this be fixed? Because as of right now polymorphism doesn't work with python generated code.