Returns whether the data is multi-valued, i.e. a list of data items.

This is equivalent to checking whether the data definition implements the \Drupal\Core\TypedData\ListDefinitionInterface interface.

Return value

bool Whether the data is multi-valued.

Overrides DataDefinitionInterface::isList

File

core/lib/Drupal/Core/TypedData/DataDefinition.php, line 116

Class

DataDefinition

A typed data definition class for defining data based on defined data types.

Namespace

Drupal\Core\TypedData

Code

public function isList() {
  return $this instanceof ListDataDefinitionInterface;
}

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