GP Populate Anything Register Custom Data Object

snippet.php

<?php 
  
  add_action( 'plugins_loaded', 'register_object' );

  function register_object() {
      if ( class_exists( 'GP_Populate_Anything' ) && class_exists( 'GPPA_Object_Type' ) ) {
          // For a starter class file, you can copy one from source like 
          // wp-content\plugins\gp-populate-anything\includes\class-object-type-post.php
          require_once plugin_dir_path( __FILE__ ) . 'includes/class-object-type-YOURTYPE.php';
          gp_populate_anything()->register_object_type( 'yourtype', 'GPPA_Object_Type_YOURTYPE' );
      } else {
          return;
      }
  }