```\nfunction royaltyInfo(uint tokenId, uint salePrice)\n    external\n    view\n    returns (address, uint) {\n    /// @notice all tokens have same royalty receiver\n    tokenId = 0; // silence unused var warning\n    return (royalties[tokenId].account, royalties[tokenId].shares.mul(salePrice).div(1000));\n}\n```\n