Syntax: process (action {(v, k) ==> void})
Process method does not start enumeration itself. To force enumeration, you can use {@link each} method.
Original LINQ method name: do.
public function call($action)
{
$action = Utils::createLambda($action, 'v,k');
return new self(function () use($action) {
foreach ($this as $k => $v) {
$action($v, $k);
(yield $k => $v);
}
});
}