private final String getDescription(ASTNode node) {
final String getDescription(ASTNode node) {
	private final String getDescription(ASTNode node) {		if (fGroupDescriptions != null) {			Assert.isTrue(isChanged(node) || isModified(node), "Tries to get description of node that is not changed or modified"); //$NON-NLS-1$			return fRewrite.getDescription(node);		}		return null;	}