code: @Override
      public DateTime getEnd() {
          try {
              final rh_protoClient client = getRpcClient(OncRpcProtocols.ONCRPC_UDP);
              try {
                  return decodeTimestamp(BlockingWrapper.execute(() -> client.getEnd_1()));
              } finally {
                  client.close();
              }
          } catch (OncRpcException | IOException | InterruptedException | RuntimeException ex) {
              LOG.log(Level.SEVERE, "getEnd RPC call failed", ex);
              throw new RuntimeException("RPC call failed", ex);
          }
      }
docs: Return the highest timestamp in the stored metrics.
  
  @return The highest timestamp in the stored metrics.