protected String getPasswordlessUserAttribute(final Map<String, List<Object>> syncopeUser,
                                                  final String attributeName) {
        return syncopeUser.containsKey(attributeName)
            ? syncopeUser.get(attributeName).getFirst().toString()
            : null;
    }
This is {@link SyncopePasswordlessUserAccountStore}.

@author Misagh Moayyed
@since 7.3.0
support/cas-server-support-syncope-authentication/src/main/java/org/apereo/cas/syncope/passwordless/SyncopePasswordlessUserAccountStore.java