target; } function offsetExists(mixed $offset): bool { return isset($this->target[$offset]); } function offsetGet(mixed $offset): mixed { return $this->target[$offset]; } function offsetSet(mixed $offset, mixed $value): void { $this->target[$offset] = $value; } function offsetUnset(mixed $offset): void { unset($this->target[$offset]); } function getIterator(): Traversable { return (function () { foreach ($this->target as $key => $value) { yield $key => $value; } })(); } }