* @param defaultvalue
   * @param configuration
   * @return Cons
   */
  public static Cons lookupConfigurationPropertyValues(String property, Stella_Object defaultvalue, KeyValueList configuration) {
    if (configuration == null) {
      configuration = Stella.$SYSTEM_CONFIGURATION_TABLE$;
    }
    { Stella_Object value = configuration.lookup(StringWrapper.wrapString(property));

      if (value != null) {
        return (value.consify());
      }
      else if (defaultvalue != null) {
        return (defaultvalue.consify());
      }
      else {
        return (Stella.NIL);
      }
    }
  }