question: public void appendNodes ( NodeVector nodes ) { int nNodes = nodes . size ( ) ; if ( null == m_map ) { m_mapSize = nNodes + m_blocksize ; m_map = new int [ m_mapSize ] ; } else if ( ( m_firstFree + nNodes ) >= m_mapSize ) { m_mapSize += ( nNodes + m_blocksize ) ; int newMap [ ] = new int [ m_mapSize ] ; System . arraycopy ( m_map , 0 , newMap , 0 , m_firstFree + nNodes ) ; m_map = newMap ; } System . arraycopy ( nodes . m_map , 0 , m_map , m_firstFree , nNodes ) ; m_firstFree += nNodes ; }
target:  Append the nodes to the list.