code: protected final int getIndex(long stamp)
    {
      if (TraceComponent.isAnyTracingEnabled() && tc.isEntryEnabled())
        SibTr.entry(this, tc, "getIndex", Long.valueOf(stamp));
  
      int first = 0;
      int last = blockVector.size();
  
      int index = linearSearch(stamp, first, last - 1);
      
      if (TraceComponent.isAnyTracingEnabled() && tc.isEntryEnabled())
        SibTr.exit(tc, "getIndex", index);
  
      return index;
    }
docs: gets the index in blockVector for the RangeObject containing stamp