@Override
    public List<Credential> getSigningCredentials() {
        return Stream.of(signingCertificate)
            .map(Unchecked.function(c -> WsFederationCertificateProvider.readCredential(c.getInputStream())))
            .filter(Objects::nonNull)
            .collect(Collectors.toList());
    }
This is {@link WsFederationStaticCertificateProvider}.

@author Misagh Moayyed
@since 6.5.0
support/cas-server-support-wsfederation/src/main/java/org/apereo/cas/support/wsfederation/authentication/crypto/WsFederationStaticCertificateProvider.java