Sets the minimum amount that a user can zoom into to.  Default is 100.
        
        :param      amount | <int>

def setMinZoomAmount( self, amount ):
        """
        Sets the minimum amount that a user can zoom into to.  Default is 100.
        
        :param      amount | <int>
        """
        self._minZoomAmount = amount
        view = self.mainView()
        if view:
            view.minZoomAmountChanged.emit(amount)