geysir-8.x-1.2/geysir.api.php

<?php
/**
* @file
* Hooks provided by the Geysir module.
*/

/**
* @addtogroup hooks
* @{
*/

/**
* Modify Geysir links.
*
* @param array $links
*   Geysir links.
* @param array $context
*   Context of links.
*   - paragraph (\Drupal\paragraphs\ParagraphInterface)
*     Displayed paragraph item.
*   - parent (\Drupal\Core\Entity\FieldableEntityInterface)
*     Parent entity.
*   - delta (int)
*     Delta of field.
*   - field_definition (\Drupal\Core\Field\FieldDefinition)
*     The field definition.
*/
function hook_geysir_paragraph_links_alter(&$links, $context) {
   // You can add custom actions here.
   $links['up'] = [
       // Move up links.
     ];
   $links['down'] = [
       // Move down link.
     ];
  }

/**
* @} End of "addtogroup hooks".
*/