/**
* Add a new Item (or edit an existing item) to the Group
*
* @param string $name
* @param callable $callback
*
* @return Item
*/
public function item($name, Closure $callback = null)
{
if ($this->items->has($name)) {
$item = $this->items->get($name);
} else {
$item = $this->container->make('Maatwebsite\\Sidebar\\Item');
$item->name($name);
}
$this->call($callback, $item);
$this->addItem($item);
return $item;
}
/**
* Whether a offset exists
* @link http://php.net/manual/en/arrayaccess.offsetexists.php
*
* @param mixed $offset <p>
* An offset to check for.
* </p>
*
* @return boolean true on success or false on failure.
* </p>
* <p>
* The return value will be casted to boolean if non-boolean was returned.
* @since 5.0.0
*/
public function offsetExists($offset)
{
return $this->items->has($offset);
}