private static boolean operandsEqualTo(@NotNull PyBinaryExpression expr, @NotNull Collection<String> literals) {
      final String leftExpressionText = expr.getLeftExpression().getText();
      final PyExpression rightExpression = expr.getRightExpression();
      final String rightExpressionText = rightExpression != null ? rightExpression.getText() : null;
      for (String literal : literals) {
        if (literal.equals(leftExpressionText) || literal.equals(rightExpressionText)) {
          return true;
        }
      }
      return false;
    }
private static boolean operandsEqualTo(@NotNull PyBinaryExpression expr, @NotNull Collection<String> literals)