public CALC expression(AbstractCalculator expression, boolean withinBrackets) {
        expression(expression.infix, withinBrackets);
        return getThis();
    }
public CALC expression ( AbstractCalculator expression , boolean withinBrackets ) { expression ( expression . infix , withinBrackets ) ; return getThis ( ) ; }
Copy expression from given calculator into this expression within or without brackets

@param expression
@param withinBrackets
@return