code: private List<ConnectionSpecWrapper> getConnectionWrappers() {
          List<ConnectionSpecWrapper> allConnections = DbConfiguration.getConnectionSpecWrappers();
          List<ConnectionSpecWrapper> result = new LinkedList<>();
  
          for (ConnectionSpecWrapper connectionWrapper : allConnections) {
              if (!connectionWrapper.isTesting() && (dbName == null || dbName.equals(connectionWrapper.getDbName())))
                  result.add(connectionWrapper);
          }
          return result;
      }
docs: Returns all connections which correspond dbName  of this filter and not for testing
  
  @return all connections which correspond dbName  of this filter and not for testing.