private List<String> filterSignatureAlgorithms(final List<String> algorithms) {
        val filteredAlgorithms = filterForRuntimeSupportedAlgorithms(algorithms);
        if (blackListedSignatureSigningAlgorithms != null) {
            filteredAlgorithms.removeAll(this.blackListedSignatureSigningAlgorithms);
        }
        return filteredAlgorithms;
    }
<p>Getter for the field <code>signatureReferenceDigestMethods</code>.</p>

@return a {@link List} object
pac4j-saml/src/main/java/org/pac4j/saml/metadata/BaseSAML2MetadataGenerator.java