go error

func (a *instanceCostService) GetInstanceCost(c *gin.Context) (any, error) {
switch QP.ProductCode {
	case "ddssharding":
		mongodb := &Mongodb{}
		mongodb.SetComponent(ic)
		return mongodb.GetInstanceCost(c)
                
default:
		return nil, fmt.Errorf("暂不支持的产品类型")
	}