Question

In the code below, how does `ChildEvent` reuse the fields of `ParentEvent`?

```Go
package main

import "fmt"

type ParentEvent struct {
	IsSet bool
}

type ChildEvent struct {
	ParentEvent
}

func main() {
	event := ChildEvent{
		ParentEvent: ParentEvent{
			IsSet: true,
		},
	}
	fmt.Println(event)
}

```

Accepted Answer

By embedding `ParentEvent` as an anonymous field (struct embedding), which is Go's form of composition.

Answer

By inheriting from `ParentEvent` using the extends keyword.

Answer

By using a generic type parameter that `ParentEvent` satisfies.

Answer

By implicitly implementing a `ParentEvent` interface.

Question from the Go test