$ret = array();

		foreach ( $data['trash'] as $id ) {
			$ret[] = self::process_trash_item( $id );
		}

		return $ret;

	}

	/**
	 * Trash (or delete) a single item
	 *
	 * @since 3.37.12
	 *
	 * @param mixed $id Item id. Usually a WP_Post ID but can also be custom ID strings.
	 * @return array Associative array containing information about the trashed item.
	 *               On success returns an array with an `id` key corresponding to the item's id.
	 *               On failure returns the `id` as well as an `error` key which is a string describing the error.
	 */
	private static function process_trash_item( $id ) {

		// Default response.
		$res = array(
			// Translators: %s = Item id.
			'error' => sprintf( esc_html__( 'Unable to delete "%s". Invalid ID.', 'lifterlms' ), $id ),
			'id'    => $id,
		);

		/**
		 * Custom or 3rd party items can perform custom deletion actions using this filter.
		 *
		 * Return an associative array containing at least the `$id` to cease execution and have
		 * the custom item returned via the `process_trash()` method.
		 *
		 * A successful deletion return should be: `array( 'id' => $id )`.
		 *
		 * A failure should contain an error message in a second array member:
		 * `array( 'id' => $id, 'error' => esc_html__( 'My error message', 'my-domain' ) )`.
		 *
		 * @since Unknown.
		 *
		 * @param null|array $trash_response Denotes the trash response. See description above for details.
		 * @param array      $res            The initial default error response which can be modified for your needs and then returned.
		 * @param mixed      $id             The ID of the course element. Usually a WP_Post id.
		 */
		$custom = apply_filters( 'llms_builder_trash_custom_item', null, $res, $id );
		if ( $custom ) {
			return $custom;
		}

		// Determine the element's post type.
		$type = is_numeric( $id ) ? get_post_type( $id ) : false;