Can't model json schema schemas

[mhmd-azeez]

Currently, I can't do something like this:

components:
    schemas:
        SchemaType:
            type: string
            enum:
                - object
        Schema:
            properties:
                type:
                    $ref: '#/components/schemas/SchemaType'
                properties:
                    additionalProperties:
                        $ref: '#/components/schemas/Property'
                required:
                    type: array
                    items:
                        type: string
        PropertyType:
            type: string
            enum:
                - string
                - number
                - boolean
                - object
        Property:
            properties:
                type:
                    $ref: '#/components/schemas/PropertyType'
                description:
                    type: string