question: void fillEntryTree ( Set < PageLeafEntry > entries , Row row ) { int ptr = _rowHead ; byte [ ] buffer = _buffer ; while ( ptr < BLOCK_SIZE ) { int code = buffer [ ptr ] & CODE_MASK ; int len = getLength ( code , row ) ; if ( code == INSERT || code == REMOVE ) { PageLeafEntry entry = new PageLeafEntry ( this , row , ptr , len , code ) ; entries . add ( entry ) ; } ptr += len ; } }
target:  Fills the entry tree map with entries from the block.