GPipelinePtr pipeline = GPipelineFactory::create();

GElementPtr a, b_mutable, c, d = nullptr;

// 创建一个 mutable（异变），在其中注入三个node

// ps：这里设定的依赖信息关系，是无效的

b_mutable = pipeline->createGGroup<MyMutable>({

pipeline->createGNode<MyNode1>(GNodeInfo("nodeB1")),

pipeline->createGNode<MyNode2>(GNodeInfo("nodeB2")),

pipeline->createGNode<MyNode1>(GNodeInfo("nodeB3"))

});

pipeline->registerGElement<MyNode1>(&a, {}, "nodeA", 1);

pipeline->registerGGroup(&b_mutable, {a}, "mutableB", 1);

pipeline->registerGElement<MyNode2>(&c, {a}, "nodeC", 1);

pipeline->registerGElement<MyWriteParamNode>(&d, {b_mutable, c}, "nodeD", 1);

// 执行多次，查看 b_mutable 中的执行结果。每次都是不同的

pipeline->process(6);

GPipelineFactory::remove(pipeline);