How to verify signatures with predicate functions Leave feedback

public final List<BaseSignature> verify(VerifyOptions verifyOptions, Predicate<BaseSignature> predicate) throws Exception
public final List<BaseSignature> verify(List<VerifyOptions> verifyOptionsList, Predicate<BaseSignature> predicate) throws Exception

Signature signature = new Signature("sample.pdf");
try
{
    // verify Barcode signatures with the text "12345678"
    BarcodeVerifyOptions options = new BarcodeVerifyOptions("12345678");

    // keep only verified Barcode signatures with a specific SignatureId
    List<BaseSignature> signatures = signature.verify(options, signatureItem ->
        signatureItem.getSignatureType() == SignatureType.Barcode &&
        "123".equals(signatureItem.getSignatureId()));

    // Optionally, process the verified signatures here.
    System.out.println("Verified " + signatures.size() + " Barcode signature(s) with SignatureId 123");
}
finally
{
    signature.dispose();
}

Signature signature = new Signature("sample_signed_digital.pdf");
try
{
    TextVerifyOptions textVerifyOptions = new TextVerifyOptions();
    textVerifyOptions.setText("Approved");

    List<VerifyOptions> verifyOptionsList = new ArrayList<VerifyOptions>();
    verifyOptionsList.add(new DigitalVerifyOptions());
    verifyOptionsList.add(textVerifyOptions);

    // keep verified signatures on the first 3 pages; digital signatures must also be valid
    List<BaseSignature> filteredSignatures = signature.verify(verifyOptionsList, sig ->
        sig.getPageNumber() >= 1 &&
        sig.getPageNumber() <= 3 &&
        (!(sig instanceof DigitalSignature) || ((DigitalSignature) sig).isValid()));

    System.out.println("Verified " + filteredSignatures.size() + " signatures on pages 1-3");
    for (BaseSignature sig : filteredSignatures)
    {
        System.out.println("  " + sig.getSignatureType() + " signature on page " + sig.getPageNumber());
    }
}
finally
{
    signature.dispose();
}