How to get the parent name if chid taxonomy term id is known?
Drupal 5.x: Taxonomy_get_parents()
Drupal 6.x: Taxonomy_get_parents()
Drupal 7.x: Taxonomy_get_parents()
Drupal 8.0.x: TermStorage::loadParents()
Drupal 8.1.x: TermStorage::loadParents()
Drupal 8.2.x: TermStorage::loadParents()