1	// Open file on disk.
2	f, _ := os.Open("/dir1/dir2/your_sign_pic.png")
3	// Read entire JPG into byte slice.
4	reader := bufio.NewReader(f)
5	content, _ := ioutil.ReadAll(reader)
6	// Encode as base64.
7	encoded := base64.StdEncoding.EncodeToString(content)
8	result, err := client.CreateSignature(&api.CreateSignatureArgs{
9		Content:             "Baidu",
10		ContentType:         "Enterprise",
11		Description:         "test",
12		CountryType:         "DOMESTIC",
13		SignatureFileBase64: encoded,
14		SignatureFileFormat: "png",
15	})
16	if err != nil {
17		fmt.Printf("create signature error, %s", err)
18		return
19	}
20	fmt.Printf("create signature success. %s", result)

1	result, err := client.GetSignature(&api.GetSignatureArgs{
2		SignatureId: "your signature id",
3	})
4	if err != nil {
5		fmt.Printf("get signature error, %s", err)
6		return
7	}
8	fmt.Printf("get signature success. %s", result)

1	// Open file on disk.
2	f, _ := os.Open("/dir1/dir2/your_sign_pic.png")
3	// Read entire JPG into byte slice.
4	reader := bufio.NewReader(f)
5	content, _ := ioutil.ReadAll(reader)
6	// Encode as base64.
7	encoded := base64.StdEncoding.EncodeToString(content)
8	err := client.ModifySignature(&api.ModifySignatureArgs{
9		SignatureId:         "your signature id",
10		Content:             "Baidu",
11		ContentType:         "MobileApp",
12		Description:         "this is a test",
13		CountryType:         "INTERNATIONAL",
14		SignatureFileBase64: encoded,
15		SignatureFileFormat: "png",
16	})
17	if err != nil {
18		fmt.Printf("modify signature error, %s", err)
19		return
20	}
21	fmt.Printf("modify signature success.")

1	err := client.DeleteSignature(
2		&api.DeleteSignatureArgs{SignatureId: "your signature id"})
3	if err != nil {
4		fmt.Printf("delete signature error, %s", err)
5		return
6	}
7	fmt.Printf("delete signature success.")