import jenkins.tasks.SimpleBuildWrapper; //导入依赖的package包/类
@Override public boolean start() throws Exception {
    SimpleBuildWrapper.Context c = new SimpleBuildWrapper.Context();
    Run<?, ?> run = getContext().get(Run.class);
    delegate.setUp(c, run, getContext().get(FilePath.class), getContext().get(Launcher.class), getContext().get(TaskListener.class), getContext().get(EnvVars.class));
    BodyInvoker bodyInvoker = getContext().newBodyInvoker();
    Map<String,String> overrides = c.getEnv();
    if (!overrides.isEmpty()) {
        bodyInvoker.withContext(EnvironmentExpander.merge(getContext().get(EnvironmentExpander.class), new ExpanderImpl(overrides)));
    }
    ConsoleLogFilter filter = delegate.createLoggerDecorator(run);
    if (filter != null) {
        bodyInvoker.withContext(BodyInvoker.mergeConsoleLogFilters(getContext().get(ConsoleLogFilter.class), filter));
    }
    SimpleBuildWrapper.Disposer disposer = c.getDisposer();
    bodyInvoker.withCallback(disposer != null ? new Callback(disposer) : BodyExecutionCallback.wrap(getContext())).start();
    return false;
}
 

import jenkins.tasks.SimpleBuildWrapper; //导入依赖的package包/类
public Collection<BuildWrapperDescriptor> getApplicableDescriptors() {
    Collection<BuildWrapperDescriptor> r = new ArrayList<>();
    for (BuildWrapperDescriptor d : Jenkins.getActiveInstance().getExtensionList(BuildWrapperDescriptor.class)) {
        if (SimpleBuildWrapper.class.isAssignableFrom(d.clazz)) {
            r.add(d);
        }
    }
    return r;
}
 

import jenkins.tasks.SimpleBuildWrapper; //导入依赖的package包/类
@DataBoundConstructor public CoreWrapperStep(SimpleBuildWrapper delegate) {
    this.delegate = delegate;
}
 

import jenkins.tasks.SimpleBuildWrapper; //导入依赖的package包/类
public SimpleBuildWrapper getDelegate() {
    return delegate;
}
 

import jenkins.tasks.SimpleBuildWrapper; //导入依赖的package包/类
Execution(SimpleBuildWrapper delegate, StepContext context) {
    super(context);
    this.delegate = delegate;
}
 

import jenkins.tasks.SimpleBuildWrapper; //导入依赖的package包/类
Callback(@Nonnull SimpleBuildWrapper.Disposer disposer) {
    this.disposer = disposer;
}
 

import jenkins.tasks.SimpleBuildWrapper; //导入依赖的package包/类
@Override public void setUp(SimpleBuildWrapper.Context context, Run<?,?> build, FilePath workspace, Launcher launcher, TaskListener listener, EnvVars initialEnvironment) throws IOException, InterruptedException {}