public function search_items( WP_REST_Request $request ) {
    $taxonomies = $request[ WP_REST_Search_Controller::PROP_SUBTYPE ];
    if ( in_array( WP_REST_Search_Controller::TYPE_ANY, $taxonomies, true ) ) {
      $taxonomies = $this->subtypes;
    }

    $page     = (int) $request['page'];
    $per_page = (int) $request['per_page'];

    $query_args = array(
      'taxonomy'   => $taxonomies,
      'hide_empty' => false,
      'offset'     => ( $page - 1 ) * $per_page,
      'number'     => $per_page,
    );

    if ( ! empty( $request['search'] ) ) {
      $query_args['search'] = $request['search'];
    }

    if ( ! empty( $request['exclude'] ) ) {
      $query_args['exclude'] = $request['exclude'];
    }

    if ( ! empty( $request['include'] ) ) {
      $query_args['include'] = $request['include'];
    }

    
/**
 * Filters the query arguments for a REST API search request.
 *
 * Enables adding extra arguments or setting defaults for a term search request.
 *
 * @since 5.6.0
 *
 * @param array           $query_args Key value array of query var to query value.
 * @param WP_REST_Request $request    The request used.
 */
    $query_args = apply_filters( 'rest_term_search_query', $query_args, $request );

    $query       = new WP_Term_Query();
    $found_terms = $query->query( $query_args );
    $found_ids   = wp_list_pluck( $found_terms, 'term_id' );

    unset( $query_args['offset'], $query_args['number'] );

    $total = wp_count_terms( $query_args );

    // wp_count_terms() can return a falsey value when the term has no children.
    if ( ! $total ) {
      $total = 0;
    }

    return array(
      self::RESULT_IDS   => $found_ids,
      self::RESULT_TOTAL => $total,
    );
  }