wse-1.0.x-dev/modules/wse_lb/wse_lb.module

<?php

/**
 * @file
 * Implements hooks for the Workspaces Layout Builder module.
 */

use Drupal\wse_lb\BlockContentWorkspaceHandler;

/**
 * Implements hook_entity_type_build().
 */
function wse_lb_entity_type_build(array &$entity_types) {
  $entity_types['block_content']->setHandlerClass('workspace', BlockContentWorkspaceHandler::class);
}