区块内研社实操之GameFi
// 如果想更换遗留系统，只需要将 Facade 更新实现即可
public process() {
ShitMountains shitMountains = new ShitMountains();
shitMountains.foo();
shitMountains.bar();
}}class System {
public process() {
FacadeForShitMountains facadeForShitMountain
