GPipelinePtr pipeline = GPipelineFactory::create(); // 创建一个pipeline，用于执行图框架信息

GElementPtr hcg = nullptr;

pipeline->registerGElement<HelloCGraphNode>(&hcg); // 注册一个HelloCGraphNode节点，功能就是打印 "Hello, CGraph." 信息

pipeline->process(); // 运行pipeline

GPipelineFactory::remove(pipeline);