public RunContentDescriptor showRunContent(@Nullable RunContentDescriptor reuseContent) {
    RunContentDescriptor descriptor = createDescriptor();
    Disposer.register(descriptor, this);
    Disposer.register(myProject, descriptor);
    RunContentManagerImpl.copyContentAndBehavior(descriptor, reuseContent);
    myRunContentDescriptor = descriptor;
    return descriptor;
  }
public RunContentDescriptor showRunContent(@Nullable RunContentDescriptor reuseContent)