code: public synchronized void write(int blockNumber, int blockOffset, byte[] buffer) 
  			throws IOException {
  		write(blockNumber, blockOffset, buffer, 0, buffer.length);
  	}
docs: Writes to this block.
  
  @param blockNumber Internal number of the block in question.
  @param blockOffset Offset within the block to commence writing at.
  @param buffer Buffer storing the data to be written.