@Override
  public @Nullable Object getData(@NotNull String dataId) {
    if (CommonDataKeys.NAVIGATABLE.is(dataId)) {
      DocumentReference value = myProblemFilesList.getSelectedValue();
      VirtualFile file = value != null ? value.getFile() : null;
      if (file != null) {
        return new OpenFileDescriptor(myProject, file);
      }
    }
    return null;
  }
@Override
  public @Nullable Object getData(@NotNull String dataId)