docs: private void handleIndex(int index) throws HpackException {
          if (index <= Hpack.STATIC_TABLE_LENGTH) {
              addStaticTableEntry(index);
          } else {
              int adjustedIndex = getRealIndex(index - Hpack.STATIC_TABLE_LENGTH);
              HeaderField headerField = headerTable[adjustedIndex];
              headerEmitter.emitHeader(headerField.name, headerField.value, false);
          }
      }