code: @Override
      public void close()
      {
          if (settings != null)
          {
              settings.clear();
              settings = null;
          }
  
          if (connection != null)
          {
              connection.disconnect();
              connection = null;
          }
  
          reader = null;
      }
docs: /*
  (non-Javadoc)
  
  @see com.impetus.kundera.client.Client#close()