docs: public List<String> getRHSBoundFacts() {
          if (this.rhs == null) {
              return null;
          }
          final List<String> list = new ArrayList<String>();
          for (int i = 0; i < this.rhs.length; i++) {
              if (this.rhs[i] instanceof ActionInsertFact) {
                  final ActionInsertFact p = (ActionInsertFact) this.rhs[i];
                  if (p.getBoundName() != null) {
                      list.add(p.getBoundName());
                  }
              }
          }
          return list;
      }