public List<String> getBlackListedSignatureSigningAlgorithms() {
        if (blackListedSignatureSigningAlgorithms == null) {
            this.blackListedSignatureSigningAlgorithms =
                new ArrayList<>(defaultSignatureSigningConfiguration.getExcludedAlgorithms());
        }

        return blackListedSignatureSigningAlgorithms;
    }
<p>Getter for the field <code>blackListedSignatureSigningAlgorithms</code>.</p>

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