def fibbo(n: int) -> int:
  return 1

graph LR
    A[Square Rect] -- Link text --> B((Circle))
    A --> C(Round Rect)
    B --> D{Rhombus}
    C --> D

sequenceDiagram
    participant Alice
    participant Bob
    Alice->>John: Hello John, how are you?
    loop HealthCheck
        John->>John: Fight against hypochondria
    end
    Note right of John: Rational thoughts<br/>prevail...
    John-->>Alice: Great!
    John->>Bob: How about you?
    Bob-->>John: Jolly good!

gantt
    title A Gantt Diagram
    dateFormat  YYYY-MM-DD
    section Section
    A task             : a1, 2014-01-01, 30d
    Another task       : after a1  , 20d
    section Another
    Task in sec        : 2014-01-12  , 12d
    another task       : 24d

gantt
    title Example Starfish Trace
    dateFormat x
    axisFormat %S.%L

    section Frontend
    /checkout                                        :crit, 0, 1500ms
    GET /api/session                                 :150, 170ms
    POST /api/analytics                              :190, 70ms
    GET /api/checkout/state                          :200, 500ms
    GET /api/checkout/cart                           :1100, 140ms
    App                                              :1300, 180ms
    POST /api/analytics                              :done, 1450, 70ms
    GET /assistant/poll                              :done, 1450, 120ms
    POST /api/analytics                              :done, 1580, 70ms

    section API Service
    /api/checkout/state                              :crit, 240, 440ms
    cache.get session#58;[redacted]                  :360, 10ms
    db.query select from session                     :370, 20ms
    db.query select from user                        :390, 20ms
    db.query select from checkout                    :410, 20ms
    http.request GET http#58;//payments/poll  :450, 210ms
    thread.spawn refresh-checkout-cache              :done, 670, 220ms

    section Payment Service
    /poll                                            :crit, 470, 180ms
    db.query select from payment                     :490, 30ms
    db.query update payment                          :530, 60ms