public function DataDefinitionInterface::isRequired
public DataDefinitionInterface::isRequired()
Determines whether a data value is required.
For required data a non-NULL value is mandatory.
Return value
bool Whether a data value is required.
File
- core/lib/Drupal/Core/TypedData/DataDefinitionInterface.php, line 114
Class
- DataDefinitionInterface
- Interface for data definitions.
Namespace
Drupal\Core\TypedDataCode
public function isRequired();
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https://api.drupal.org/api/drupal/core!lib!Drupal!Core!TypedData!DataDefinitionInterface.php/function/DataDefinitionInterface::isRequired/8.1.x