oak-core/src/main/java/org/apache/jackrabbit/oak/plugins/index/counter/jmx/NodeCounter.java [190:219]:
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    private static Long getCombinedCountIfAvailable(NodeState s) {
        boolean found = false;
        long x = 0;
        PropertyState p = s.getProperty(NodeCounterEditor.COUNT_HASH_PROPERTY_NAME);
        if (p != null) {
            found = true;
            x = p.getValue(Type.LONG);
        }
        p = s.getProperty(NodeCounterEditor.COUNT_PROPERTY_NAME);
        if (p != null) {
            found = true;
            x += p.getValue(Type.LONG);
        }
        return found ? x : null;
    }
    
    @Override
    public String getEstimatedChildNodeCounts(String path, int level) {
        StringBuilder buff = new StringBuilder();
        collectCounts(buff, path, level);
        return buff.toString();
    }
    
    private void collectCounts(StringBuilder buff, String path, int level) {
        long count = getEstimatedNodeCount(path);
        if (count > 0) {
            if (buff.length() > 0) {
                buff.append(",\n");
            }
            buff.append(path).append(": ").append(count);
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oak-core/src/main/java/org/apache/jackrabbit/oak/plugins/index/counter/jmx/NodeCounterOld.java [189:218]:
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    private static Long getCombinedCountIfAvailable(NodeState s) {
        boolean found = false;
        long x = 0;
        PropertyState p = s.getProperty(NodeCounterEditor.COUNT_HASH_PROPERTY_NAME);
        if (p != null) {
            found = true;
            x = p.getValue(Type.LONG);
        }
        p = s.getProperty(NodeCounterEditor.COUNT_PROPERTY_NAME);
        if (p != null) {
            found = true;
            x += p.getValue(Type.LONG);
        }
        return found ? x : null;
    }

    @Override
    public String getEstimatedChildNodeCounts(String path, int level) {
        StringBuilder buff = new StringBuilder();
        collectCounts(buff, path, level);
        return buff.toString();
    }

    private void collectCounts(StringBuilder buff, String path, int level) {
        long count = getEstimatedNodeCount(path);
        if (count > 0) {
            if (buff.length() > 0) {
                buff.append(",\n");
            }
            buff.append(path).append(": ").append(count);
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