src/main/java/org/apache/sling/discovery/impl/TopologyWebConsolePlugin.java [439:456]:
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            } else {
                final int statusCode = topologyConnectorClient.getStatusCode();
                final String statusDetails = topologyConnectorClient.getStatusDetails();
                final String tooltipText;
                switch(statusCode) {
                case HttpServletResponse.SC_UNAUTHORIZED:
                    tooltipText = HttpServletResponse.SC_UNAUTHORIZED +
                        ": possible setup issue of discovery.impl on target instance, or wrong URL";
                    break;
                case HttpServletResponse.SC_NOT_FOUND:
                    tooltipText = HttpServletResponse.SC_NOT_FOUND +
                        ": possible white list rejection by target instance";
                    break;
                case -1:
                    tooltipText = "-1: check error log. possible connection refused.";
                    break;
                default:
                    tooltipText = null;
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src/main/java/org/apache/sling/discovery/impl/TopologyWebConsolePlugin.java [851:868]:
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                } else {
                    final int statusCode = topologyConnectorClient.getStatusCode();
                    final String statusDetails = topologyConnectorClient.getStatusDetails();
                    final String tooltipText;
                    switch(statusCode) {
                        case HttpServletResponse.SC_UNAUTHORIZED:
                            tooltipText = HttpServletResponse.SC_UNAUTHORIZED +
                                ": possible setup issue of discovery.impl on target instance, or wrong URL";
                            break;
                        case HttpServletResponse.SC_NOT_FOUND:
                            tooltipText = HttpServletResponse.SC_NOT_FOUND +
                                ": possible white list rejection by target instance";
                            break;
                        case -1:
                            tooltipText = "-1: check error log. possible connection refused.";
                            break;
                        default:
                            tooltipText = null;
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