private void insertChunk(final MemoryChunk chunk){
  Preconditions.checkNotNull(chunk,"Error: Memory chunk can't be null");
  final int index=findChunkPosition(chunk);
  m_chunks.add(index,chunk);
}

private void insertChunk ( final MemoryChunk chunk ) { Preconditions . checkNotNull ( chunk , "Error: Memory chunk can't be null" ) ; final int index = findChunkPosition ( chunk ) ; m_chunks . add ( index , chunk ) ; }
inserts a chunk of memory into the list at the right position .
