Verify for multiple signatures Leave feedback

using (Signature signature = new Signature("sampleSigned.pdf"))
{
    TextVerifyOptions textVerifyOptions = new TextVerifyOptions()
    {
        AllPages = true, // this value is set by default
        SignatureImplementation = TextSignatureImplementation.Stamp,
        Text = "John",
        MatchType = TextMatchType.Contains
    };
    BarcodeVerifyOptions barcVerifyOptions = new BarcodeVerifyOptions()
    {
        AllPages = true, // this value is set by default
        Text = "John",
        MatchType = TextMatchType.Contains
    };
    QrCodeVerifyOptions qrcdVerifyOptions = new QrCodeVerifyOptions()
    {
        AllPages = true, // this value is set by default
        Text = "John",
        MatchType = TextMatchType.Contains
    };
    DigitalVerifyOptions digtVerifyOptions = new DigitalVerifyOptions("certificate.pdf")
    {
        Comments = "Test comment"
    };
    // verify document signatures
    List<VerifyOptions> listOptions = new List<VerifyOptions>();
    listOptions.Add(textVerifyOptions);
    listOptions.Add(barcVerifyOptions);
    listOptions.Add(qrcdVerifyOptions);
    listOptions.Add(digtVerifyOptions);
    VerificationResult result = signature.Verify(listOptions);
    if (result.IsValid)
    {
        Console.WriteLine("\nDocument was verified successfully!");
    }
    else
    {
        Console.WriteLine("\nDocument failed verification process.");
    }
}