// Add test channels
    ChannelInfo channel1 = createTestChannel("channel1", 1000);  // 1Gbps
    ChannelInfo channel2 = createTestChannel("channel2", 10000); // 10Gbps
    
    manager.addChannel(channel1);
    manager.addChannel(channel2);
    
    // Test load balancer selection
    ChannelLoadBalancer balancer = new ChannelLoadBalancer(manager);
    
    // Large transfer should prefer high-bandwidth channel

        public String getSessionId() {
            return sessionId;
        }

        public List<ChannelInfo> getChannels() {
            return new ArrayList<>(channels);
        }

        public void addChannel(ChannelInfo channel) {
            channels.add(channel);
            if (primaryChannel == null) {
                primaryChannel = channel;
            }
        }