def delete_by_query!(query, params = nil, request_options = {})
      res = delete_by_query(query, params, request_options)
      wait_task(res['taskID'], WAIT_TASK_DEFAULT_TIME_BEFORE_RETRY, request_options) if res
      res
    end
def delete_by_query!(query, params = nil, request_options = {})
      res = delete_by_query(query, params, request_options)
      wait_task(res['taskID'], WAIT_TASK_DEFAULT_TIME_BEFORE_RETRY, request_options) if res
      res
    end
Delete all objects matching a query and wait end of indexing

 @param query the query string
 @param params the optional query parameters
 @param request_options contains extra parameters to send with your query