requestInterceptor with Python

Hello , 

I have configured the swagger using FAST API for my project , Now I would like to intercept the request coming out of swagger UI . In swagger documentation I see a parameter requestInterceptor can be used for such task , but when ever I am starting my app with below mentioned code , Swagger UI starts giving me error "s.requestInterceptor is not a function /openapi.json" , I tried looking for the solution but found None

app = FastAPI(
    swagger_ui_parameters={"requestSnippetsEnabled": True,"persistAuthorization":True,
                           "requestInterceptor": """
           (req) => {
               // Modify the request object as needed
               req.headers['Authorization'] = 'Bearer <your_access_token>';
               return req;
           }
       """
                           
                           
                           
                           }
    
)