openapi: 3.0.1
info:
  title: API
  version: 1.0.0
paths:
  /:
    get:
      responses:
        default:
          description: OK
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/container/properties/with%20space'
            text/xml:
              schema:
                $ref: '#/components/schemas/container/properties/with+space'
components:
  schemas:
    container:
      type: object
      properties:
        'with space':
          type: string