行情 API非展示型方案基礎檔案現金流量表現金流量表 GET /openapi/fundamentals/financial/cash-flow • 功能說明：取得股票現金流量表資料。• 頻率限制：速率限制每60秒60個請求 Request Responses200401417500OKUnauthorized: Authentication requiredA business logic error triggered when the request cannot be processed due to domain-specific constraints.Internal Server Error.