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  "source": "pragma solidity ^0.6.0;\n\n/**\n * @dev String operations.\n */\nlibrary Strings {\n    /**\n     * @dev Converts a `uint256` to its ASCII `string` representation.\n     */\n    function toString(uint256 value) internal pure returns (string memory) {\n        // Inspired by OraclizeAPI's implementation - MIT licence\n        // https://github.com/oraclize/ethereum-api/blob/b42146b063c7d6ee1358846c198246239e9360e8/oraclizeAPI_0.4.25.sol\n\n        if (value == 0) {\n            return \"0\";\n        }\n        uint256 temp = value;\n        uint256 digits;\n        while (temp != 0) {\n            digits++;\n            temp /= 10;\n        }\n        bytes memory buffer = new bytes(digits);\n        uint256 index = digits - 1;\n        temp = value;\n        while (temp != 0) {\n            buffer[index--] = byte(uint8(48 + temp % 10));\n            temp /= 10;\n        }\n        return string(buffer);\n    }\n}\n",
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