def _wrap_joined_index(self, joined, other):
    assert (other.dtype == self.dtype), (other.dtype, self.dtype)
    result = super()._wrap_joined_index(joined, other)
    result._data._freq = self._get_join_freq(other)
    return result
def _wrap_joined_index(self, joined, other):
    assert (other.dtype == self.dtype), (other.dtype, self.dtype)
    result = super()._wrap_joined_index(joined, other)
    result._data._freq = self._get_join_freq(other)
    return result