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 $data * @param self::PRESERVE|self::REPLACE|self::MERGE $mode */ public function import(array $data, int $mode = self::REPLACE): void; /** * Import data from an external data into existing data * * @param DataInterface $data * @param self::PRESERVE|self::REPLACE|self::MERGE $mode */ public function importData(DataInterface $data, int $mode = self::REPLACE): void; /** * Export data as raw data * * @return array * * @psalm-mutation-free */ public function export(): array; }