List<String> () { List<String> hosts = new ArrayList<>(myState.getPluginHosts()); String pluginHosts = System.getProperty("idea.plugin.hosts"); if (pluginHosts != null) { ContainerUtil.addAll(hosts, pluginHosts.split(";")); } hosts.addAll(UpdateSettingsProviderHelper.getPluginRepositories()); ContainerUtil.removeDuplicates(hosts); return hosts; }