@Override
  @NotNull
  public CommittedChangesProvider<SvnChangeList, ChangeBrowserSettings> getCommittedChangesProvider() {
    if (myCommittedChangesProvider == null) {
      myCommittedChangesProvider = new SvnCommittedChangesProvider(this);
    }
    return myCommittedChangesProvider;
  }
@Override
  @NotNull
  public CommittedChangesProvider<SvnChangeList, ChangeBrowserSettings> getCommittedChangesProvider()