How to hide Model Information

I described Schema information like below in my swagger.yaml.

 

I want to show the only B to Swagger UI. But, this will also show A. How to hide A from Swagger UI?

 

 

components:
  schemas:
    B:
      allOf:
        - type: object
          properties:
            bbb:
              type: string
        - $ref: '#/components/schemas/A'
    A:
       - type: object
          properties:
            aaa:
              type: string