index a single node for visitation by rules . concode_field_sep Map<RuleSet,List<Rule>> ruleSetRules concode_elem_sep Map<String,List<Node>> nodeNameToNodes concode_field_sep void add concode_elem_sep void visitAll concode_elem_sep void clear concode_elem_sep void indexNodes concode_elem_sep void visit concode_elem_sep void initialize