code: public static void validateNotEmpty( String stringToCheck, String argumentName )
          throws NullArgumentException
      {
          validateNotEmpty( stringToCheck, false, argumentName );
      }
docs: Validates that the string is not null and not an empty string without trimming the string.
  
  @param stringToCheck The object to be tested.
  @param argumentName  The name of the object, which is used to construct the exception message.
  
  @throws NullArgumentException if the stringToCheck is either null or zero characters long.