Type Definition dex_general::pallet::KLast

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pub type KLast<T: Config> = StorageMap<_GeneratedPrefixForStorageKLast<T>, Twox64Concat, (T::AssetId, T::AssetId), U256, ValueQuery>;
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Refer: https://github.com/Uniswap/uniswap-v2-core/blob/master/contracts/UniswapV2Pair.sol#L88 Last unliquidated protocol fee;

Storage type is [StorageMap] with key type (T :: AssetId, T :: AssetId) and value type U256.