private final VagrantExtension extension;
    private final Provider<ReaperService> reaperServiceProvider;
    private ReaperService reaper;
    // pkg private so plugin can set this after construction
    long refs;
    private boolean isVMStarted = false;

    public VagrantMachine(VagrantExtension extension, Provider<ReaperService> reaperServiceProvider) {
        this.extension = extension;