/**
* Get the FieldDefinition object required to render this field's formatter.
*
* @return \Drupal\Core\Field\BaseFieldDefinition
* The field definition.
*
* @see \Drupal\entity_embed\FieldFormatterEntityEmbedDisplayBase::build()
*/
public function getFieldDefinition()
{
if (!isset($this->fieldDefinition)) {
$field_type = $this->getPluginDefinition()['field_type'];
$this->fieldDefinition = BaseFieldDefinition::create($field_type);
// Ensure the field name is unique for each Entity Embed Display plugin
// instance.
static $index = 0;
$this->fieldDefinition->setName('_entity_embed_' . $index++);
}
return $this->fieldDefinition;
}
