Class diagram
Source
```mermaid
classDiagram
Animal <|-- Dog
Animal <|-- Cat
Animal : +String name
Animal : +int age
Animal : +makeSound() void
Dog : +fetch() void
```
Diagram
Source
```mermaid
classDiagram
Animal <|-- Dog
Animal <|-- Cat
Animal : +String name
Animal : +int age
Animal : +makeSound() void
Dog : +fetch() void
```
Diagram