code: public SortedMap<String, SortedMap<String, Object>> getActiveTenantInfo() {
          SortedMap<String, SortedMap<String, Object>> activeTenantMap = new TreeMap<>();
          synchronized (m_tenantDBMap) {
              for (String tenantName : m_tenantDBMap.keySet()) {
                  DBService dbservice = m_tenantDBMap.get(tenantName);
                  Map<String, Object> dbServiceParams = dbservice.getAllParams();
                  activeTenantMap.put(tenantName, new TreeMap<String, Object>(dbServiceParams));
              }
          }
          return activeTenantMap;
      }
docs: Get the information about all active tenants, which are those whose DBService has
  been created. The is keyed by tenant name, and its value is a map of parameters
  configured for the corresponding DBService.
  
  @return  Map of information for all active tenants.