Returns whether or not this wizard can move forward.

        :return     <bool>

def canGoBack(self):
        """
        Returns whether or not this wizard can move forward.

        :return     <bool>
        """
        try:
            backId = self._navigation.index(self.currentId())-1
            if backId >= 0:
                self._navigation[backId]
            else:
                return False
        except StandardError:
            return False
        else:
            return True