@Override
  protected SystemMemberBridgeServerImpl createSystemMemberBridgeServer(AdminBridgeServer bridge)
      throws AdminException {
    SystemMemberBridgeServerJmxImpl managedSystemMemberBridgeServer = null;
    synchronized (managedCacheServerResourcesMap) {
      /*
       * Ensuring that a single instance of SystemMember BridgeServer is created per
       * AdminBridgeServer.
       */
      SystemMemberBridgeServerJmxImpl managedCacheServerResource =
          managedCacheServerResourcesMap.get(bridge.getId());
      if (managedCacheServerResource != null) {
        managedSystemMemberBridgeServer = managedCacheServerResource;
      } else {
        managedSystemMemberBridgeServer = new SystemMemberBridgeServerJmxImpl(this, bridge);
        managedCacheServerResourcesMap.put(bridge.getId(), managedSystemMemberBridgeServer);
      }
    }
    return managedSystemMemberBridgeServer;
  }
Creates a SystemMemberBridgeServerJmxImpl instance. This instance is also added to the
managedResources collection.

@param bridge reference to AdminBridgeServer for which this JMX resource is to be created
@return SystemMemberBridgeServerJmxImpl - JMX Implementation of SystemMemberBridgeServerImpl
@throws AdminException if constructing SystemMemberBridgeServerJmxImpl instance fails
geode-core/src/main/java/org/apache/geode/admin/jmx/internal/SystemMemberCacheJmxImpl.java