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Namespaces in Drupal 8

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Introduction to namespaces

PHP classes, interfaces, and traits in Drupal are namespaced. See the Objected-oriented programming conventions for more information.

See also

Objected-oriented programming conventions

Namespace
Drupal\Core\Config
Drupal\Core\Config\Development
Drupal\Core\Config\Entity
Drupal\Core\Config\Entity\Exception
Drupal\Core\Config\Entity\Query
Drupal\Core\Config\Importer
Drupal\Core\Config\Schema
Drupal\Core\Config\Testing
Drupal\Core\Controller
Drupal\Core\Controller\ArgumentResolver
Drupal\Core\Database
Drupal\Core\Database\Driver\corefake
Drupal\Core\Database\Driver\corefake\Install
Drupal\Core\Database\Driver\mysql
Drupal\Core\Database\Driver\mysql\Install
Drupal\Core\Database\Driver\pgsql
Drupal\Core\Database\Driver\pgsql\Install
Drupal\Core\Database\Driver\sqlite
Drupal\Core\Database\Driver\sqlite\Install
Drupal\Core\Database\Install
Drupal\Core\Database\Query
Drupal\Core\Datetime
Drupal\Core\Datetime\Element
Drupal\Core\Datetime\Entity
Drupal\Core\Datetime\Plugin\Field\FieldWidget
Drupal\Core\DependencyInjection
Drupal\Core\DependencyInjection\Compiler
Drupal\Core\Diff
Drupal\Core\Discovery
Drupal\Core\Display
Drupal\Core\Display\Annotation
Drupal\Core\Entity
Drupal\Core\Entity\Annotation
Drupal\Core\Entity\Controller
Drupal\Core\Entity\Display
Drupal\Core\Entity\Element
Drupal\Core\Entity\Enhancer
Drupal\Core\Entity\Entity
Drupal\Core\Entity\EntityReferenceSelection
Drupal\Core\Entity\Entity\Access
Drupal\Core\Entity\Event
Drupal\Core\Entity\Exception
Drupal\Core\Entity\Form
Drupal\Core\Entity\KeyValueStore
Drupal\Core\Entity\KeyValueStore\Query
Drupal\Core\Entity\Plugin\DataType
Drupal\Core\Entity\Plugin\DataType\Deriver
Drupal\Core\Entity\Plugin\Derivative
Drupal\Core\Entity\Plugin\EntityReferenceSelection
Drupal\Core\Entity\Plugin\Validation\Constraint

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