public function merge(Config $merge)
    {
        /** @var Config $value */
        foreach ($merge as $key => $value) {
            if (array_key_exists($key, $this->data)) {
                if (is_int($key)) {
                    $this->data[] = $value;
                } elseif ($value instanceof self && $this->data[$key] instanceof self) {
                    $this->data[$key]->merge($value);
                } else {
                    if ($value instanceof self) {
                        $this->data[$key] = new static($value->toArray(), $this->allowModifications);
                    } else {
                        $this->data[$key] = $value;
                    }
                }
            } else {
                if ($value instanceof self) {
                    $this->data[$key] = new static($value->toArray(), $this->allowModifications);
                } else {
                    $this->data[$key] = $value;
                }

                $this->count++;
            }
        }

        return $this;
    }