@Override
      public void onSuccess(final @Nullable DataNode<ProjectData> externalProject) {
        if (externalProject == null) {
          if (importResultCallback != null) {
            importResultCallback.consume(false);
          }
          return;
        }
        ProjectDataManager.getInstance().importData(externalProject, project);
        if (importResultCallback != null) {
          importResultCallback.consume(true);
        }
      }
@Override
      public void onSuccess(final @Nullable DataNode<ProjectData> externalProject)