func (s *CIService) GetQRcode(ctx context.Context, name string, cover int, opt *ObjectGetOptions, id ...string) (*GetQRcodeResult, *Response, error)

opt := &cos.ObjectPutOptions{
    nil,
    &cos.ObjectPutHeaderOptions{
        XOptionHeader: &http.Header{},
    },
}
pic := &cos.PicOperations{
    IsPicInfo: 1,
    Rules: []cos.PicOperationsRules{
        {
            FileId: "format.jpg",
            Rule:   "QRcode/cover/1",
        },
    },
}
opt.XOptionHeader.Add("Pic-Operations", cos.EncodePicOperations(pic))
name := "test.jpg"
filepath := "./QRcode.jpg"
res, _, err := c.CI.PutFromFile(context.Background(), name, filepath, opt)

name := "test.jpg"
res, _, err := c.CI.GetQRcode(context.Background(), name, 1, nil)

type GetQRcodeResult struct {
    CodeStatus  int        
    QRcodeInfo  *QRcodeInfo
    ResultImage string
}
type QRcodeInfo struct {
    CodeUrl      string    
    CodeLocation *CodeLocation
}
type CodeLocation struct {
    Point []string
}

func (s *CIService) GenerateQRcode(ctx context.Context, opt *GenerateQRcodeOptions) (*GenerateQRcodeResult, *Response, error)

func (s *CIService) GenerateQRcodeToFile(ctx context.Context, filePath string, opt *GenerateQRcodeOptions) (*GenerateQRcodeResult, *Response, error)

opt := &cos.GenerateQRcodeOptions{
    QRcodeContent: "<https://www.example.com>"
    Mode:          0,
    Width:         200,
}
// Case 1. Generate a QR code
res, _, err := c.CI.GenerateQRcode(context.Background(), opt)

// Case 2. Generate a QR code and save it as a file
filepath := "example.jpg"
res, _, err := c.CI.GenerateQRcodeToFile(context.Background(), filepath, opt)

type GenerateQRcodeOptions struct {
    QRcodeContent string
    Mode          int 
    Width         int
}

type GenerateQRcodeResult struct {
    ResultImage string
}