void addDone(PsiBuilderImpl.StartMarker marker, @Nullable PsiBuilderImpl.ProductionMarker anchorBefore) {
    add(anchorBefore == null ? size() : indexOf(anchorBefore), -marker.markerId);
  }
void addDone(PsiBuilderImpl.StartMarker marker, @Nullable PsiBuilderImpl.ProductionMarker anchorBefore)