code: @VisibleForTesting
      public ClockAndCount getClockAndCountOf(ByteBuffer context, CounterId id)
      {
          int position = findPositionOf(context, id);
          if (position == -1)
              return ClockAndCount.BLANK;
  
          long clock = context.getLong(position + CounterId.LENGTH);
          long count = context.getLong(position + CounterId.LENGTH + CLOCK_LENGTH);
          return ClockAndCount.create(clock, count);
      }
docs: Returns the clock and the count associated with the given counter id, or (0, 0) if no such shard is present.