code: @Override
      public synchronized List<Map<String, Object>> listResourceModelConfigurations(){
          Map propertiesMap = projectConfig.getProperties();
          Properties properties = new Properties();
          properties.putAll(propertiesMap);
          return listResourceModelConfigurations(properties);
      }
docs: list the configurations of resource model providers.
  @return a list of maps containing:
  <ul>
  <li>type - provider type name</li>
  <li>props - configuration properties</li>
  </ul>