docs: public static <T extends ImageGray<T>>
  	InputToBinary<T> globalFixed(double threshold, boolean down, Class<T> inputType) {
  		if( BOverrideFactoryThresholdBinary.globalFixed != null )
  			return BOverrideFactoryThresholdBinary.globalFixed.handle(threshold, down, inputType);
  		return new GlobalFixedBinaryFilter<>(threshold, down, ImageType.single(inputType));
  	}