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function checkLengthMatch(uint256 l1, uint256 l2) internal pure;
function checkLengthMatch(uint256 l1, uint256 l2, uint256 l3) internal pure;
function computeSum(uint256[] calldata values) internal pure returns (uint256 sum);
function checkHostToExtension(
uint256 amount,
uint32 dstChainId,
uint256 msgValue,
mapping(uint32 => bool) storage allowedChains,
IGasFeesHelper gasHelper
) internal view;
error CommonLib_LengthMismatch();
error AmountNotValid();
error ChainNotValid();
error NotEnoughGasFee();