private List<RunContentDescriptor> filterByContent(List<? extends RunContentDescriptor> descriptors) {
    return ContainerUtil.filter(descriptors, descriptor -> {
      Content content = descriptor.getAttachedContent();
      return content != null && content.getManager() == myContentManager;
    });
  }
private List<RunContentDescriptor> filterByContent(List<? extends RunContentDescriptor> descriptors)