@NotNull
  private static DiffRequestProducer createBaseNotFoundErrorRequest(@NotNull final AbstractFilePatchInProgress patchInProgress) {
    final String beforePath = patchInProgress.getPatch().getBeforeName();
    final String afterPath = patchInProgress.getPatch().getAfterName();
    return new DiffRequestProducer() {
      @NotNull
      @Override
      public String getName() {
        final File ioCurrentBase = patchInProgress.getIoCurrentBase();
        return ioCurrentBase == null ? patchInProgress.getCurrentPath() : ioCurrentBase.getPath();
      }

      @NotNull
      @Override
      public DiffRequest process(@NotNull UserDataHolder context, @NotNull ProgressIndicator indicator)
        throws DiffRequestProducerException, ProcessCanceledException {
        throw new DiffRequestProducerException(
          VcsBundle.message("changes.error.cannot.find.base.for.path", beforePath != null ? beforePath : afterPath));
      }
    };
  }
@NotNull
  private static DiffRequestProducer createBaseNotFoundErrorRequest(@NotNull final AbstractFilePatchInProgress patchInProgress)