static @Nullable ActionToolbar findActionToolbar(@Nullable RunContentDescriptor descriptor) {
    if (descriptor == null) return null;

    for (Component component : descriptor.getComponent().getComponents()) {
      if (component instanceof ActionToolbar) {
        return ((ActionToolbar)component);
      }
    }
    return null;
  }
static @Nullable ActionToolbar findActionToolbar(@Nullable RunContentDescriptor descriptor)