code: public OperationFuture<List<AlertPolicy>> modify(AlertPolicyFilter filter,
          AlertPolicyConfig modifyConfig) {
  
          return modify(getRefsFromFilter(filter), modifyConfig);
      }
docs: Update Alert policies
  
  @param filter the search policies criteria
  @param modifyConfig update policy config
  @return OperationFuture wrapper for list of AlertPolicy