$collection->set()
Adds a new element to the collection
$collection->set(mixed $key, mixed $value = null): Kirby\Toolkit\CollectionParameters
| Name | Type | Default | Description | 
|---|---|---|---|
| $key * | mixed | – | string or array | 
| $value | mixed | null | 
Return type
This method modifies the existing $collection object it is applied to and returns it again.