if (currentIndex == 0 && indexCount == 1) { return parentProgressViewer; }  final double lowerBound = 1.0 * currentIndex / indexCount; final double upperBound = 1.0 * (currentIndex + 1) / indexCount;
	public static ISVNProgressViewer createInstance(ISVNProgressViewer parentProgressViewer, double lowerBound, double upperBound) {		SVNAssert.assertNotNull(parentProgressViewer);		SVNAssert.assertTrue(lowerBound >= 0.0 && lowerBound <= upperBound && upperBound <= 1.0);		return new SVNProgressRangeViewer(parentProgressViewer, lowerBound, upperBound);	}