code: public static void notEmpty(String string, String message)  {
  		if(!validation) return;
  		notNull(message);
  		notNull(string, message);
  		if(string.length() == 0)
  			throw new ParameterException(ErrorCode.EMPTY, message);
  	}
docs: Checks if the given String is empty.
  @param string The String to validate.
  @param message The error message to include in the Exception in case the validation fails.
  @throws ParameterException if the given String is empty.