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\"lineNumbers\": \"true\",\n    \"lineOffset\": \"5\"\n  }, \"/**\\n * @title LZChainidMapping\\n * @notice Contract to manage mappings between chain id and LZ eid for cross-chain communication\\n * @dev See chain id list on https://chainlist.org/\\n *      See LZ eid list on https://docs.layerzero.network/v2/developers/evm/technical-reference/deployed-contracts\\n */\\nabstract contract LZChainidMapping is Ownable {\\n    /// @dev Error thrown when chain id does not have a set LZ eid\\n    error UnknownChainByChainid(uint32 chainId);\\n\\n    /// @dev Error thrown when LZ eid does not have a registered chain id\\n    error UnknownChainByEID(uint32 eid);\\n\\n    /// @dev Error thrown when chain id or LZ eid is zero\\n    error WrongChainIdentifier();\\n\\n    /// @dev Error thrown when chain id or LZ eid are already registered\\n    error ChainMappingAlreadyExists();\\n\\n    /// @notice Event emitted when a chain id and LZ eid are registered\\n    event ChainMappingAdded(uint32 chainId, uint32 eid);\\n\\n    /// @notice Event emitted when a chain id and LZ eid are removed\\n    event ChainMappingRemoved(uint32 chainId);\\n\\n    /// @dev Mapping of chain id to LZ eid\\n    mapping(uint32 chainId => uint32 eid) private _c2e;\\n\\n    /// @dev Mapping of LZ eid to chain id\\n    mapping(uint32 eid => uint32 chainId) private _e2c;\\n\\n    /**\\n     * @notice Adds a chain id and LZ eid mapping\\n     * @param chainId Chain id to map\\n     * @param eid LZ eid to map\\n     */\\n    function addChainMapping(uint32 chainId, uint32 eid) external onlyOwner {\\n        if (chainId == 0 || eid == 0) revert WrongChainIdentifier();\\n        if (_c2e[chainId] != 0 || _e2c[eid] != 0) revert ChainMappingAlreadyExists();\\n        _c2e[chainId] = eid;\\n        _e2c[eid] = chainId;\\n        emit ChainMappingAdded(chainId, eid);\\n    }\\n\")), mdx(\"h3\", {\n    \"id\": \"recommendation\",\n    \"style\": {\n      \"position\": \"relative\"\n    }\n  }, mdx(\"a\", {\n    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