```
{: data-line="2"}
-See: [Dynamic object keys](https://flow.org/docs/objects.html#objects-as-maps)
+See: [Dynamic object keys](https://flow.org/en/docs/types/objects/#toc-objects-as-maps)
## Advanced features
type Country = $Keys<typeof countries>
```
-See: [Enums](https://flow.org/docs/utility-types.html#keyst)
+See: [Enums](https://flow.org/en/docs/types/utilities/#toc-keys)
### Type aliases
}
```
-See: [Type aliases](https://flow.org/docs/quick-reference.html#type-aliases)
+See: [Type aliases](https://flow.org/en/docs/types/aliases/)
### Generic classes
var n: GenericClass<number> = new GenericClass(0)
```
-See: [Generic classes](https://flow.org/docs/quick-reference.html#generics)
+See: [Generic classes](https://flow.org/en/docs/types/generics/#toc-classes-with-generics)
### Interfaces
(new Foo: Jsonable)
```
-See: [Interfaces](https://flow.org/docs/quick-reference.html#interfaces)
+See: [Interfaces](https://flow.org/en/docs/types/interfaces/)
### Functions
}
```
-See: [Functions](https://flow.org/docs/functions.html)
+See: [Functions](https://flow.org/en/docs/types/functions/)
### Imports