public List<String> getSignatureAlgorithms() {
        if (signatureAlgorithms == null) {
            this.signatureAlgorithms = new ArrayList<>(defaultSignatureSigningConfiguration.getSignatureAlgorithms());
        }

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

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