# Menu.ParentMenu

Public Menu.ParentMenu behavioral model.

## Signatures

```ts
export interface ParentMenu {
    readonly state: RefSubject.HydratedRefSubject<State, Schema.SchemaError>;
    readonly collection: RefSubject.RefSubject<Collection.State<string>>;
    readonly triggerId: string;
}
```

## Property: collection

Item registry used for collection-driven keyboard behavior and mounted ordering.

## Property: state

Renderer-independent RefSubject state consumed by this component or operation.

## Property: triggerId

Id of the trigger that owns this menu and receives focus when the menu closes.