Accepts a HoloMap and a dynamic callback function creating
        an equivalent DynamicMap from the HoloMap.

def _make_dynamic(self, hmap, dynamic_fn, streams):
        """
        Accepts a HoloMap and a dynamic callback function creating
        an equivalent DynamicMap from the HoloMap.
        """
        if isinstance(hmap, ViewableElement):
            return DynamicMap(dynamic_fn, streams=streams)
        dim_values = zip(*hmap.data.keys())
        params = util.get_param_values(hmap)
        kdims = [d(values=list(util.unique_iterator(values))) for d, values in
                 zip(hmap.kdims, dim_values)]
        return DynamicMap(dynamic_fn, streams=streams, **dict(params, kdims=kdims))