question: public final void pushPair ( Node v1 , Node v2 ) { if ( null == m_map ) { m_map = new Node [ m_blocksize ] ; m_mapSize = m_blocksize ; } else { if ( ( m_firstFree + 2 ) >= m_mapSize ) { m_mapSize += m_blocksize ; Node newMap [ ] = new Node [ m_mapSize ] ; System . arraycopy ( m_map , 0 , newMap , 0 , m_firstFree ) ; m_map = newMap ; } } m_map [ m_firstFree ] = v1 ; m_map [ m_firstFree + 1 ] = v2 ; m_firstFree += 2 ; }
target:  Push a pair of nodes into the stack.   Special purpose method for TransformerImpl, pushElemTemplateElement. Performance critical.