状态机的手工构建

Question

@Configuration
@EnableStateMachine
class StateMachineConfiguration extends
    StateMachineConfigurerAdapter<State, Event> {

@WithStateMachine
public class AwaitingData {

@OnStateEntry(target = "AwaitingData")
public void onEntry() {

private StateMachine<State, Event> buildStateMachine() {
    StateMachineConfiguration config = new StateMachineConfiguration();
    StateMachineBuilder.Builder<State, Event> builder = StateMachineBuilder.builder();
    config.configure(builder.configureStates());
    config.configure(builder.configureTransitions());
    return builder.build();
}

当库配置机器时，我已经浏览了它，但我仍然看不到注释函数是在哪里/如何添加的。谷歌帮不上什么忙，通常会直接把我送到Spring文档，这些文档似乎没有覆盖我的用例。