docs: public static HttpStatus fromStatusCode(final int statusCode)
  	{
  		if (statusCode < 100 || statusCode > 999)
  		{
  			throw new IllegalArgumentException("Illegal status code " + statusCode);
  		}
  
  		HttpStatus result = STATUS_CODES.get(statusCode);
  		if (result == null)
  		{
  			return new HttpStatus(statusCode, "Unknown");
  		}
  		return result;
  	}