code: public static <T extends ImageGray<T>>
  	PointDetector<T> createFast( @Nullable ConfigFastCorner configFast , Class<T> imageType) {
  		if( configFast == null )
  			configFast = new ConfigFastCorner();
  		configFast.checkValidity();
  
  		FastCornerDetector<T> alg = FactoryIntensityPointAlg.fast(configFast.pixelTol, configFast.minContinuous, imageType);
  		alg.setMaxFeaturesFraction(configFast.maxFeatures);
  
  		return new WrapFastToPointDetector<>(alg);
  	}
docs: Creates a Fast corner detector
  
  @param configFast Configuration for FAST feature detector
  @param imageType ype of input image.
  @see FastCornerDetector