public FieldItemInterface::preSave()

public BaseFieldDefinition::getPropertyDefinition($name)

public FieldItemBase::view($display_options = array())

The human-readable name of the widget type. Type:

The formatter settings. Type:

The entity definition manager. Type:

public FieldItemList::generateSampleItems($count = 1)

public FieldStorageDefinitionInterface

public BaseFieldDefinition::setName($name)

public FieldConfigInterface::setPropertyConstraints($name