[
 (data_type_def)
 (entity_def)
 (enum_def)
 (event_def)
 (property_def)
 (structure_def)
 (type_class_def)
 (union_def)
 (rdf_def)
 ;; ----------------
 (annotation_only_body)
 (entity_body)
 (enum_body)
 (structured_body)
 (type_class_body)
 (union_body)
 ;; ----------------
 (formal_constraint)
 (constraint_environment)
 (environment_def)
 (constraint_sentence)
 (sequence_builder)
 ;; ----------------
 (sequence_of_values)
 (sequence_of_predicate_values)
 ] @fold