6 uses of TAXONOMY_HIERARCHY_SINGLE in Zircon Profile 8

forum_form_taxonomy_vocabulary_form_alter in core/modules/forum/forum.module

Implements hook_form_BASE_FORM_ID_alter().

MigrateTaxonomyVocabularyTest::testTaxonomyVocabulary in core/modules/taxonomy/src/Tests/Migrate/d7/MigrateTaxonomyVocabularyTest.php

Tests the Drupal 7 taxonomy vocabularies to Drupal 8 migration.

OverviewTerms::submitForm in core/modules/taxonomy/src/Form/OverviewTerms.php

Form submission handler.

taxonomy_check_vocabulary_hierarchy in core/modules/taxonomy/taxonomy.module

Checks and updates the hierarchy flag of a vocabulary.

taxonomy_help in core/modules/taxonomy/taxonomy.module

Implements hook_help().

TermForm::save in core/modules/taxonomy/src/TermForm.php

Form submission handler for the 'save' action.