docs: @PostConstruct
      public void checkUniqueSchemes() {
          Multimap<String, ConfigFileLoaderPlugin> schemeToPluginMap = HashMultimap.create();
  
          for (ConfigFileLoaderPlugin plugin: getLoaderPlugins()) {
              schemeToPluginMap.put(plugin.getUriScheme(), plugin);
          }
  
          StringBuilder violations = new StringBuilder();
          for (String scheme: schemeToPluginMap.keySet()) {
              final Collection<ConfigFileLoaderPlugin> plugins = schemeToPluginMap.get(scheme);
              if (plugins.size() > 1) {
                  violations.append("\n\n* ").append("There are  has multiple ")
                          .append(ConfigFileLoaderPlugin.class.getSimpleName())
                          .append(" plugins that support the scheme: '").append(scheme).append('\'')
                          .append(":\n\t").append(plugins);
              }
          }
  
          if (violations.length() > 0) {
              throw new IllegalStateException(violations.toString());
          }
      }