An integer that is the number of pairs of parentheses.
The BracketsCount counts the number of pairs of parentheses enclosing the expression. For example, the expression "(A1+A2)" after parsing, transforms in an expression tree with two CellReferenceExpression nodes and one AdditionExpression. The AdditionExpression has a BracketsCount equal to 1, while two CellReferenceExpression are not enclosed in parentheses and have the BracketsCount equal to 0 .
The BracketsCount can be used to reconstruct a string expression from the parsed expression tree.