$collection->set()
Adds a new element to the collection
$collection->set(mixed $key, mixed $value = null): Kirby\Toolkit\Collection
Parameters
| 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.