# class: DoesNotExist

## method: DoesNotExist.doesNotExist

# class: Exists

## method: Exists.doesNotExist

## method: Exists.exists

### param: Exists.exists.exists
- `exists` <[boolean]>

### param: Exists.exists.doesNotExist
- `doesNotExist` <[boolean]>

### option: Exists.exists.option
- `option` <[int]>

## method: Exists.exists2
