ArrayObject does not work with end() in PHP 7.4

From PHP 7.4 array methods don't operate on internal array, but on ArrayObject itself. I summarized two solutions for that.

1. Getting internal array of object.

$array = new \ArrayObject(["a", "b"]);
$item = end($array->getArrayCopy());

2. Creating Facade of ArrayObject and adding custom method end() to upgraded class.