code: public void enableConnector(String connectorClass, Properties connectorInitProperties) throws ConnectorInitException {
  
          ConnectorEntry connector = connectors.get(connectorClass);
  
          if(connector != null)
              connectors.get(connectorClass).enableConnector(connectorInitProperties);
  
      }
docs: Makes enable connector with given class name if
  it registered and not already enabled.
  Non-existing or already enabled connectors be ignored
  
  @param connectorClass connector class canonical name
  @param connectorInitProperties initialization properties of connector
  @throws ConnectorInitException