src/main/java/com/amazonaws/services/neptune/propertygraph/io/JsonPropertyGraphPrinter.java [156:172]:
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    @Override
    public void printProperties(Map<?, ?> properties, boolean applyFormatting) throws IOException {
        printProperties(properties);
    }

    @Override
    public void printProperties(String id, String streamOperation, Map<?, ?> properties) throws IOException {
        printProperties(properties);
    }

    @Override
    public void printEdge(String id, String label, String from, String to) throws IOException {
        printEdge(id, label, from, to, null, null);
    }

    @Override
    public void printEdge(String id, String label, String from, String to, Collection<String> fromLabels, Collection<String> toLabels) throws IOException {
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src/main/java/com/amazonaws/services/neptune/propertygraph/io/VariableRowCsvPropertyGraphPrinter.java [101:117]:
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    @Override
    public void printProperties(Map<?, ?> properties, boolean applyFormatting) throws IOException {
        printProperties(properties);
    }

    @Override
    public void printProperties(String id, String streamOperation, Map<?, ?> properties) throws IOException {
        printProperties(properties);
    }

    @Override
    public void printEdge(String id, String label, String from, String to) throws IOException {
        printEdge(id, label, from, to, null, null);
    }

    @Override
    public void printEdge(String id, String label, String from, String to, Collection<String> fromLabels, Collection<String> toLabels) throws IOException {
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