// The third element in the file should be a sequence of attribute
// description components. Each attribute description component will
// itself be a sequence of octet strings, where the first one is the
// token, the second is the attribute name, and all remaining elements are
// the attribute options.
writer.writeStartSequence();
for (ByteSequence token : atDecodeMap.keySet())
{
writer.writeStartSequence();
AttributeType attrType = atDecodeMap.get(token);
Set<String> options = aoDecodeMap.get(token);