Candle.IsBullishOrBearish() never returns false (i.e. is never Bearish!)

I noticed that the above method never returns 'false' and so cannot indicate bearish signals. The source code is as follows:

           ```

///

/// Whether the candle is bullish or bearish. ///

/// The candle which should be checked for the trend. /// if bullish, , if bearish, - neither one nor the other. public static bool? IsBullishOrBearish(this Candle candle) { if (candle == null) throw new ArgumentNullException(nameof(candle));

		var isWhiteOrBlack = candle.IsWhiteOrBlack();

		switch (isWhiteOrBlack)
		{
			case true:
				if (candle.GetBottomShadow() >= candle.GetBody())
					return true;
				break;
			case false:
				if (candle.GetTopShadow() >= candle.GetBody())
					return true;
				break;
		}

		return null;
	}

I'm guessing that the second case should return 'false' .   It looks to me like the top case is looking for an inverted hammer (bullish),  whereas the bottom case is looking for a shooting star (bearish).   However shouldn't it also be looking at the other shadows in each case since we want a short shadow opposite the long shadows for both inverted hammer and shooting start right??    Am I missing something?