@Override
  public void refresh() {
    try {
      bridgeInfo = vm.getBridgeInfo(cache, bridgeInfo.getId());

    } catch (AdminException ex) {
      throw new InternalGemFireException(
          "Unexpected exception while refreshing",
          ex);
    }
  }
Returns the VM-unique id of this cache server
geode-core/src/main/java/org/apache/geode/admin/internal/SystemMemberBridgeServerImpl.java