Denotes that one or more terms in the vocabulary has a single parent.
Deprecated
in Drupal 8.2.x and will be removed before 9.0.0. Use \Drupal\taxonomy\VocabularyInterface::HIERARCHY_SINGLE instead.
File
- core/modules/taxonomy/taxonomy.module, line 34
- Enables the organization of content into categories.
Code
const TAXONOMY_HIERARCHY_SINGLE = 1;
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