docs: public void pinchToZoom(PointF startPoint1, PointF startPoint2, PointF endPoint1, PointF endPoint2)
  	{
  		if(config.commandLogging){
  			Log.d(config.commandLoggingTag, "pinchToZoom("+startPoint1+", "+startPoint2+", "+endPoint1+", "+endPoint2+")");
  		}
  		
  		if (android.os.Build.VERSION.SDK_INT < 14){
  			throw new RuntimeException("pinchToZoom() requires API level >= 14");
  		}
  		zoomer.generateZoomGesture(startPoint1, startPoint2, endPoint1, endPoint2);
  	}