code: public byte[] getBytes()
  	{
  		byte b[] = new byte[getLength()];
  		int bytesCopied = 0;
  
  		Iterator<V> it = this.values().iterator();
  		while (it.hasNext())
  		{
  			ID3v2Frame frame = (ID3v2Frame) it.next();
  			System.arraycopy(frame.getFrameBytes(), 0, b, bytesCopied, frame.getFrameLength());
  			bytesCopied += frame.getFrameLength();
  		}
  
  		return b;
  	}
docs: Return an array bytes containing all frames contained in this object.
  This can be used to easily write the frames to a file.
  
  @return an array of bytes contain all frames contained in this object