MultiIndex.T return the transpose, which is by definition self

MultiIndex.is_object()

MultiIndex.dropna(how='any')

MultiIndex.ndim return the number of dimensions of the underlying data, by definition 1

MultiIndex.get_loc(key, method=None)

MultiIndex.set_labels(labels, level=None, inplace=False, verify_integrity=True)

MultiIndex.repeat(n, *args, **kwargs)

MultiIndex.map(mapper)