FacetField ::= SEQUENCE {
-- attributes will specify:
-- 1=use (field name)
- -- 2=sortorder 0=most frequent, 1=least frequent, ..
+ -- 2=sortorder 0=count descending, 1=alpha ascending ..
-- 3=limit (integer)
+ -- 4=start (integer)
attributes [1] IMPLICIT AttributeList,
terms [2] IMPLICIT SEQUENCE OF FacetTerm OPTIONAL
}