docs: public int getIntegerProperty(String key, int defaultValue, int[] values) {
  
          String prop  = getProperty(key);
          int    value = defaultValue;
  
          try {
              if (prop != null) {
                  value = Integer.parseInt(prop);
              }
          } catch (NumberFormatException e) {}
  
          if (ArrayUtil.find(values, value) == -1) {
              return defaultValue;
          }
  
          return value;
      }