openlucius-2.0.0-alpha3/modules/core/ol_main/ol_main.install

<?php

use Drupal\Core\Field\BaseFieldDefinition;

/**
 * Adds the 'privacy' field in comment entity.
 *
 * implements hook_update()
 * @param $sandbox
 */
function ol_main_update_9002(&$sandbox) {

  $field_storage_definition = BaseFieldDefinition::create('integer')
    ->setLabel(t('Private comment'))
    ->setDescription(t('Weather the comments is private or not.'));

  \Drupal::entityDefinitionUpdateManager()
    ->installFieldStorageDefinition('privacy', 'ol_comment', 'ol_comment', $field_storage_definition);

}

/**
 * Adds the 'section_overrides' field.
 *
 * implements hook_update()
 * @param $sandbox
 */
function ol_main_update_9001(&$sandbox) {

  $field_storage_definition = BaseFieldDefinition::create('string_long')
    ->setLabel(t('Overridden section names'))
    ->setDescription(t('Overridden section names.'));

  \Drupal::entityDefinitionUpdateManager()
    ->installFieldStorageDefinition('section_overrides', 'ol_group', 'ol_group', $field_storage_definition);

}