@Nullable
  static private PyExpression getLargeRightExpression(@NotNull PyBinaryExpression expression, @NotNull Project project) {
    final PyElementGenerator elementGenerator = PyElementGenerator.getInstance(project);
    PyExpression left = expression.getLeftExpression();
    PyExpression right = expression.getRightExpression();
    PsiElement operator = expression.getPsiOperator();
    while (isComparisonExpression(left)) {
      assert operator != null;
      right = elementGenerator.createBinaryExpression(operator.getText(), ((PyBinaryExpression)left).getRightExpression(), right);
      operator = ((PyBinaryExpression)left).getPsiOperator();
      left = ((PyBinaryExpression)left).getLeftExpression();
    }
    return right;
  }
@Nullable
  static private PyExpression getLargeRightExpression(@NotNull PyBinaryExpression expression, @NotNull Project project)