@Override
    public void visitBinaryExpression(@NotNull PsiBinaryExpression expression) {
      super.visitBinaryExpression(expression);
      if (!ComparisonUtils.isEqualityComparison(expression)) {
        return;
      }
      final PsiExpression lhs = expression.getLOperand();
      if (!ExpressionUtils.hasStringType(lhs)) {
        return;
      }
      final PsiExpression rhs = expression.getROperand();
      if (!ExpressionUtils.hasStringType(rhs)) {
        return;
      }
      registerError(expression.getOperationSign(), expression);
    }
@Override
    public void visitBinaryExpression(@NotNull PsiBinaryExpression expression)