@Override
  public boolean intervalRecentlyChanged(VirtualFile file, TextRange lineInterval, VcsRevisionNumber currentRevisionNumber) {
    final ProjectLevelVcsManager vcsManager = ProjectLevelVcsManager.getInstance(myProject);
    final AbstractVcs vcs = vcsManager.getVcsFor(file);
    if (vcs == null || vcs.getDiffProvider() == null) return false;
    if (currentRevisionNumber == null) {
      currentRevisionNumber = vcs.getDiffProvider().getCurrentRevision(file);
      assert currentRevisionNumber != null;
    }
    final ThreeState isRecent = myContentAnnotationCache.isRecent(file, vcs.getKeyInstanceMethod(), currentRevisionNumber, lineInterval,
                                                          System.currentTimeMillis() - mySettings.getLimit());
    if (! ThreeState.UNSURE.equals(isRecent)) return ThreeState.YES.equals(isRecent);

    final FileAnnotation fileAnnotation;
    try {
      fileAnnotation = vcs.getAnnotationProvider().annotate(file);
    }
    catch (VcsException e) {
      LOG.info(e);
      return false;
    }
    myContentAnnotationCache.register(file, vcs.getKeyInstanceMethod(), currentRevisionNumber, fileAnnotation);
    for (int i = lineInterval.getStartOffset(); i <= lineInterval.getEndOffset(); i++) {
      Date lineDate = fileAnnotation.getLineDate(i);
      if (lineDate != null && isRecent(lineDate)) return true;
    }
    return false;
  }
@Override
  public boolean intervalRecentlyChanged(VirtualFile file, TextRange lineInterval, VcsRevisionNumber currentRevisionNumber)