CategoricalIndex.order(return_indexer=False, ascending=True)

CategoricalIndex.searchsorted(key, side='left', sorter=None)

CategoricalIndex.value_counts(normalize=False, sort=True, ascending=False, bins=None, dropna=True)

CategoricalIndex.join(other, how='left', level=None, return_indexers=False)

CategoricalIndex.asof(label)

CategoricalIndex.difference(other)

CategoricalIndex.get_values()

CategoricalIndex.symmetric_difference(other, result_name=None)

CategoricalIndex.nlevels

CategoricalIndex.nunique(dropna=True)