How to use

extendsBound

method

in

org.jboss.jandex.WildcardType

private static String getBindingKey(WildcardType type) {
  if (type.extendsBound() != null) {
    return "+" + getGeneralTypeBindingKey(type.extendsBound());
  } else if (type.superBound() != null) {
    return "-" + getGeneralTypeBindingKey(type.superBound());
  } else {
    return "*";
  }
}