@Override
	public int hashCode() {
		final int prime = 31;
		int result = 1;
		result = prime * result + (compression ? 1231 : 1237);
		result = prime * result + Arrays.hashCode(data);
		result = prime * result + dataLength;
		result = prime * result + (dataLengthIndicator ? 1231 : 1237);
		result = prime * result + (encryption ? 1231 : 1237);
		result = prime * result + (group ? 1231 : 1237);
		result = prime * result + ((id == null) ? 0 : id.hashCode());
		result = prime * result + (preserveFile ? 1231 : 1237);
		result = prime * result + (preserveTag ? 1231 : 1237);
		result = prime * result + (readOnly ? 1231 : 1237);
		result = prime * result + (unsynchronisation ? 1231 : 1237);
		return result;
	}