getStockFlow

{
    "code": 0,
    "result": {
        "symbol": "string",
        "fromDate": "string",
        "toDate": "string",
        "flow": [
            {
                "date": "string",
                "buyQty": 0,
                "sellQty": 0,
                "netQty": 0,
                "buyAmount": 0,
                "sellAmount": 0,
                "buySellRatio": 0
            }
        ],
        "overallBuySellRatio": 0
    },
    "error": "string"
}