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Name Type Location Description
DataDefinition::isRequired function core/lib/Drupal/Core/TypedData/DataDefinition.php Determines whether a data value is required.
FieldConfigBase::isRequired function core/lib/Drupal/Core/Field/FieldConfigBase.php Returns whether the field can be empty.
ContextDefinition::isRequired function core/lib/Drupal/Core/Plugin/Context/ContextDefinition.php Determines whether the context is required.
ContextDefinition::$isRequired property core/lib/Drupal/Core/Plugin/Context/ContextDefinition.php Determines whether a data value is required.
DataDefinitionInterface::isRequired function core/lib/Drupal/Core/TypedData/DataDefinitionInterface.php Determines whether a data value is required.
FieldDefinitionInterface::isRequired function core/lib/Drupal/Core/Field/FieldDefinitionInterface.php Returns whether the field can be empty.
ContextDefinitionInterface::isRequired function core/lib/Drupal/Component/Plugin/Context/ContextDefinitionInterface.php Determines whether the context is required.