* * @since 0.1.0 */ public function find_by_service_id( int $service_id ): array; /** * Persist the duration. * * @param ServiceDuration $duration Entity. * * @since 0.1.0 */ public function save( ServiceDuration $duration ): void; /** * Delete the duration. * * @param ServiceDuration $duration Entity. * * @since 0.1.0 */ public function delete( ServiceDuration $duration ): void; }