// Mark lineages ancestral to nodes with matching reactionGroup
        for (Node node : leafNodes) {
<<<<<<< HEAD
            switch (rule) {
                case BY_POPTYPENAME:
                    if (node.getPopulation().getType().getName().equals(name))
                        mark(node, reverseTime);
                    break;
                    
                case BY_POPTYPENAME_INV:
                    if (!node.getPopulation().getType().getName().equals(name))
                        mark(node, reverseTime);
                    break;
                    
                case BY_REACTNAME:
                    if (node.getReactionGroup().getName().equals(name))
                        mark(node, reverseTime);
                    break;
                    
                case BY_REACTNAME_INV:
                    if (!node.getReactionGroup().getName().equals(name))
                        mark(node, reverseTime);
                    break;
            }
=======
            InheritanceReactionGroup leafRG = node.getReactionGroup();           
            if (leafRG != null && leafRG.getName().equals(reactionGroupName))
                mark(node, reverseTime);
>>>>>>> 27eafebfdcd2b77bb347ffcd31a2c8d5d8fddf36
        }
        
        // Explicitly unmark lineages decending from unmarked root nodes

        
        // Mark lineages ancestral to nodes with matching reactionGroup
        for (Node node : leafNodes) {
            switch (rule) {
                case BY_POPTYPENAME:
                    if (node.getPopulation() != null && node.getPopulation().getType().getName().equals(name))
                        mark(node, reverseTime);
                    break;
                    
                case BY_POPTYPENAME_INV:
                    if (!(node.getPopulation() != null && node.getPopulation().getType().getName().equals(name)))
                        mark(node, reverseTime);
                    break;
                    
                case BY_REACTNAME:
                    if (node.getReactionGroup() != null && node.getReactionGroup().getName().equals(name))
                        mark(node, reverseTime);
                    break;
                    
                case BY_REACTNAME_INV:
                    if (!(node.getReactionGroup() != null && node.getReactionGroup().getName().equals(name)))
                        mark(node, reverseTime);
                    break;
            }
        }
        
        // Explicitly unmark lineages decending from unmarked root nodes