private void renewLease() {
    incRPCCallsMetrics(scanMetrics, regionServerRemote);
    nextCallSeq++;
    resetController(controller, rpcTimeoutNs, priority, loc.getRegion().getTable());
    ScanRequest req =
      RequestConverter.buildScanRequest(scannerId, 0, false, nextCallSeq, false, true, -1);
    stub.scan(controller, req, resp -> {
    });
  }
This method is used when {@link ScanControllerImpl#suspend} had ever been called to get a
{@link ScanResumerImpl}, but now user stops scan and does not need any more scan results.
hbase-client/src/main/java/org/apache/hadoop/hbase/client/AsyncScanSingleRegionRpcRetryingCaller.java