static addService(srv) {
    const exists = !!ContentSearchService.getService(srv.win);
    if (exists) {
      return;
    }
    instances.push(srv);
  }
/**
   * Adds instance of `ContentSearchService` to the list of active instances.
   * It will do nothing if the instance already exists in the list.
   *
   * @param {ContentSearchService} srv Instance to add.
   * @return {undefined}
   */
Adds instance of `ContentSearchService` to the list of active instances.
It will do nothing if the instance already exists in the list.

@param {ContentSearchService} srv Instance to add.
@return {undefined}
Adds instance of ` ContentSearchService ` to the list of active instances . It will do nothing if the instance already exists in the list . @param { ContentSearchService } srv Instance to add . @return { undefined }
static addService(srv) {
    const exists = !!ContentSearchService.getService(srv.win);
    if (exists) {
      return;
    }
    instances.push(srv);
  }
static addService ( srv ) { const exists = ! ! ContentSearchService . getService ( srv . win ) ; if ( exists ) { return ; } instances . push ( srv ) ; }
Adds instance of `ContentSearchService` to the list of active instances.
Adds instance of ` ContentSearchService ` to the list of active instances .