public function toArray()
    {
        return [
            'field' => $this->getRawProperty('field'),
            'from-field' => $this->getRawProperty('fromField'),
            'to-field' => $this->getRawProperty('toField'),
            'is-deleted' => $this->isDeleted,
            'is-added' => $this->isAdded,
        ];
    }