```\\nfunction addToken(\\n    bytes4 tokenSource, \\n    bytes32 tokenSourceAddress, \\n    address nativeTokenAddress, \\n    TokenType tokenType) external onlyRole(TOKEN_MANAGER) {\\n    require(\\n        tokenInfos[nativeTokenAddress].tokenSourceAddress == bytes32(0) &&\\n        tokenSourceMap[tokenSource][tokenSourceAddress] == address(0), "Bridge: exists");\\n    uint8 precision = ERC20(nativeTokenAddress).decimals();\\n\\n    tokenSourceMap[tokenSource][tokenSourceAddress] = nativeTokenAddress;\\n    tokenInfos[nativeTokenAddress] = TokenInfo(\\n        tokenSource, \\n        tokenSourceAddress, \\n        precision, \\n        tokenType, \\n        TokenStatus.Enabled);\\n}\\n```\\n