code: public static TransactionRecovery startTransactionRecovery(TitanGraph graph, Instant start) {
          return new StandardTransactionLogProcessor((StandardTitanGraph)graph, start);
      }
docs: Returns a {@link TransactionRecovery} process for recovering partially failed transactions. The recovery process
  will start processing the write-ahead transaction log at the specified transaction time.
  
  @param graph
  @param start
  @return