Deprecated method to convert data to dictionary

def mapping(self, kdims=None, vdims=None, **kwargs):
        "Deprecated method to convert data to dictionary"
        if config.future_deprecations:
            self.param.warning(
                "The mapping method is deprecated and should no "
                "longer be used. Use another one of the common "
                "formats instead, e.g. .dframe, .array or .columns.")

        length = len(self)
        if not kdims: kdims = self.kdims
        if kdims:
            keys = zip(*[self.dimension_values(dim.name)
                         for dim in self.kdims])
        else:
            keys = [()]*length

        if not vdims: vdims = self.vdims
        if vdims:
            values = zip(*[self.dimension_values(dim.name)
                           for dim in vdims])
        else:
            values = [()]*length
        return OrderedDict(zip(keys, values))