gistfile1.txt

I have the following class which should represent one Collection in Firebase:
```
export class Slideshow {
    index: number;
    name: string;
    slides;  
}

```
When I click a list of Slideshows , one slideshow is set as selected slideshow.
I am able to list its slides with something like this:
```
onSelect( slideshow ) {
           this.slides = this._af.database.list('/slideshows/'+slideshow.$key+'/slides',{});
...
```

But when I set the type of slideshow to Slideshow  like this 
```onSelect( slideshow ) {```, 
I get:
 ```Property '$key' does not exist on type 'Slideshow’.any ```

I tried adding it to the Slides class , but that wont work since i never set it manually .
How to deal with that autogenerated ```$key``` property ? 
please?

I have the following class which should represent one Collection in Firebase:

export class Slideshow {
    index: number;
    name: string;
    slides;  
}

When I click a list of Slideshows , one slideshow is set as selected slideshow.
I am able to list its slides with something like this:

onSelect( slideshow ) {
           this.slides = this._af.database.list('/slideshows/'+slideshow.$key+'/slides',{});
...

But when I set the type of slideshow to Slideshow like this
onSelect( slideshow ) {,
I get:
Property '$key' does not exist on type 'Slideshow’.any

I tried adding it to the Slides class , but that wont work since i never set it manually .
How to deal with that autogenerated $key property ?
please?

export class Slideshow {
    $key?:string;
    index: number;
    name: string;
    slides;  
}