=== tests/cases/compiler/genericWithIndexerOfTypeParameterType2.ts ===
export class Collection<TItem extends CollectionItem> {
>Collection : Collection<TItem>
>TItem : TItem
>CollectionItem : CollectionItem

    _itemsByKey: { [key: string]: TItem; };
>_itemsByKey : { [key: string]: TItem; }
>key : string
>TItem : TItem
}

export class List extends Collection<ListItem>{
>List : List
>Collection : Collection<TItem>
>ListItem : ListItem

    Bar() {}
>Bar : () => void
}

export class CollectionItem {}
>CollectionItem : CollectionItem

export class ListItem extends CollectionItem {
>ListItem : ListItem
>CollectionItem : CollectionItem

    __isNew: boolean;
>__isNew : boolean
}