```\nfunction setBuyFee(\n    uint16 tax,\n    uint16 liquidity,\n    uint16 marketing,\n    uint16 dev,\n    uint16 donation\n) external onlyOwner {\n    buyFee.tax = tax;\n    buyFee.marketing = marketing;\n    buyFee.liquidity = liquidity;\n    buyFee.dev = dev;\n    buyFee.donation = donation;\n}\n```\n