gremlin-client-demo/src/main/java/software/amazon/neptune/RefreshAgentDemo.java [138:144]:
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            client.close();
            cluster.close();

        } catch (Exception e) {
            System.err.println("An error occurred while connecting to Neptune:");
            e.printStackTrace();
            System.exit(-1);
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gremlin-client-demo/src/main/java/software/amazon/neptune/RefreshEndpointsDemo.java [128:134]:
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            client.close();
            cluster.close();

        } catch (Exception e) {
            System.err.println("An error occurred while connecting to Neptune:");
            e.printStackTrace();
            System.exit(-1);
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