Bug 47532 SystemSummaryDialog uses core.runtime internal API
M5 SystemSummaryDialog uses Core Runtime internal API (PreferenceExporter) to dump the preferences. All public operations defined in PreferenceExporter are available from the Preferences class and should be used instead.
bundles/org.eclipse.ui.ide/src/org/eclipse/ui/internal/ide/dialogs/SystemSummaryDialog.java
if (reader != null) {
			try {
				reader.close();
			} catch (IOException e) {
				writer.println("Error closing user preference file " + e.toString()); 
			}
		}	
		file.delete();
	}	
		
	/*
	 * Appends the contents of the Plugin Registry.
	 */
	private void appendUpdateManagerLog(PrintWriter writer) {
		writer.println();
		writer.println(IDEWorkbenchMessages.getString("SystemSummary.updateManagerLog")); 
		ILocalSite site;
		try {
			site = SiteManager.getLocalSite();
		} catch (CoreException e) {
			e.printStackTrace(writer);
			return;
		}
		IInstallConfiguration[] configurations = site.getConfigurationHistory();
		for (int i = 0; i < configurations.length; i++) {
			writer.println();
			if (i>0)
				writer.println("----------------------------------------------------"); 
			writer.println(IDEWorkbenchMessages.format("SystemSummary.configuration", new Object[] {configurations[i].getLabel()}));