src/Traits/ItemableTrait.php
public function addItem(Item $item)
    {
        $this->items->put($item->getName(), $item);

        return $this;
    }
public function addItem(Item $item)
    {
        $this->items->put($item->getName(), $item);

        return $this;
    }
public function addItem ( Item $ item ) { $ this -> items -> put ( $ item -> getName ( ) , $ item ) ; return $ this ; }
Add Item instance to Group

@param Item $item

@return Item
Add Item instance to Group