public void removeRoot(@Nullable ContentEntry contentEntry, String folder, PyRootTypeProvider provider) {
      if (contentEntry == null) {
        contentEntry = getContentEntry();
      }
      VirtualFilePointer root = getRoot(provider, folder);
      if (root != null) {
        provider.removeRoot(contentEntry, root, getModel());
        fireUpdate();
      }
    }
public void removeRoot(@Nullable ContentEntry contentEntry, String folder, PyRootTypeProvider provider)