code: private static final UInteger[] mkValues() {
          int precacheSize = getPrecacheSize();
          UInteger[] ret;
  
          if (precacheSize <= 0)
              return null;
  
          ret = new UInteger[precacheSize];
          for (int i = 0; i < precacheSize; i++)
              ret[i] = new UInteger(i);
  
          return ret;
      }
docs: Generate a cached value for initial unsigned integer values.
  
  @return Array of cached values for UInteger