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LibFacet1.sol

library LibFacet1 {
    bytes32 constant storagePosition = keccak256("diamond.storage.LibFacet1");

    struct DiamondStorage {
        uint256 n;
    }

    function diamondStorage() internal pure returns (DiamondStorage storage ds) {
        bytes32 position = storagePosition;
        assembly {
            ds.slot := position
        }
    }
}