public void ReverseBracket()
{
if (type.Equals(BoolExpressionOperatorType.BracketOn))
{
type = BoolExpressionOperatorType.BracketOff;
}
else if (type.Equals(BoolExpressionOperatorType.BracketOff))
{
type = BoolExpressionOperatorType.BracketOn;
}
}
