#[ObjectShape]
attribute or an object shape in the PHPDoc comment.
Example:
$a = new stdClass();
$a->name = "name";
$a->age = 2;
After the quick-fix is applied:
/** @var $a object{name: string, age: int} */
$a = new stdClass();
$a->name = "name";
$a->age = 2;