public static function baseFieldDefinitions(EntityTypeInterface $entity_type) {
$fields = parent::baseFieldDefinitions($entity_type);
$fields['langcode'] = BaseFieldDefinition::create('language')
->setLabel(t('Language code'))
->setDescription(t('The paragraphs entity language code.'))
->setRevisionable(TRUE);
$fields['status'] = BaseFieldDefinition::create('boolean')
->setLabel(t('Published'))
->setRevisionable(TRUE)
->setTranslatable(TRUE)
->setDefaultValue(TRUE)
->setDisplayConfigurable('form', TRUE);
$fields['created'] = BaseFieldDefinition::create('created')
->setLabel(t('Authored on'))
->setDescription(t('The time that the Paragraph was created.'))
->setRevisionable(TRUE)
->setTranslatable(TRUE)
->setDisplayOptions('form', array(
'region' => 'hidden',
'weight' => 0,
))
->setDisplayConfigurable('form', TRUE);
$fields['parent_id'] = BaseFieldDefinition::create('string')
->setLabel(t('Parent ID'))
->setDescription(t('The ID of the parent entity of which this entity is referenced.'))
->setSetting('is_ascii', TRUE)
->setRevisionable(TRUE);
$fields['parent_type'] = BaseFieldDefinition::create('string')
->setLabel(t('Parent type'))
->setDescription(t('The entity parent type to which this entity is referenced.'))
->setSetting('is_ascii', TRUE)
->setSetting('max_length', EntityTypeInterface::ID_MAX_LENGTH)
->setRevisionable(TRUE);
$fields['parent_field_name'] = BaseFieldDefinition::create('string')
->setLabel(t('Parent field name'))
->setDescription(t('The entity parent field name to which this entity is referenced.'))
->setSetting('is_ascii', TRUE)
->setSetting('max_length', FieldStorageConfig::NAME_MAX_LENGTH)
->setRevisionable(TRUE);
$fields['behavior_settings'] = BaseFieldDefinition::create('string_long')
->setLabel(t('Behavior settings'))
->setDescription(t('The behavior plugin settings'))
->setRevisionable(TRUE)
->setDefaultValue(serialize([]));
return $fields;
}