jui\Accordion $items

List of collapsible items. Each item can be an array of the following structure:

[
    'header' => 'Item header',
    'content' => 'Item content',
    // the HTML attributes of the item header container tag. This will overwrite "headerOptions".
    'headerOptions' => [],
    // the HTML attributes of the item container tag. This will overwrite "itemOptions".
    'options' => [],
]