@Nullable
  FileAnnotation restore(@NotNull VcsAnnotation vcsAnnotation,
                         @NotNull VcsAbstractHistorySession session,
                         @NotNull @NonNls String annotatedContent,
                         boolean forCurrentRevision,
                         VcsRevisionNumber revisionNumber);
@Nullable
  FileAnnotation restore(@NotNull VcsAnnotation vcsAnnotation,
                         @NotNull VcsAbstractHistorySession session,
                         @NotNull @NonNls String annotatedContent,
                         boolean forCurrentRevision,
                         VcsRevisionNumber revisionNumber)