private static @Nullable AnalysisStartingPoint fromAssertionError(@NotNull PsiElement anchor) {
    if (anchor instanceof PsiAssertStatement) {
      return AnalysisStartingPoint.tryNegate(AnalysisStartingPoint.fromCondition(((PsiAssertStatement)anchor).getAssertCondition()));
    }
    return null;
  }
private static @Nullable AnalysisStartingPoint fromAssertionError(@NotNull PsiElement anchor)