code: @Override
      public Statement convert(BELStatement bs) {
          if (bs == null) {
              return null;
          }
  
          String comment = bs.getComment();
          String belSyntax = bs.getStatementSyntax();
  
          Statement s = BELParser.parseStatement(belSyntax);
          repopulateNamespaces(s);
  
          s.setComment(comment);
  
          final BELAnnotationConverter bac =
                  new BELAnnotationConverter(adefs);
          List<BELAnnotation> annotations = bs.getAnnotations();
          List<Annotation> alist = null;
          if (hasItems(annotations)) {
              alist = sizedArrayList(annotations.size());
              for (BELAnnotation annotation : annotations) {
                  alist.addAll(bac.convert(annotation));
              }
          }
  
          BELCitation bc = bs.getCitation();
          BELEvidence be = bs.getEvidence();
  
          AnnotationGroup ag = new AnnotationGroup();
          boolean hasAnnotation = false;
          if (hasItems(alist)) {
              ag.setAnnotations(alist);
              hasAnnotation = true;
          }
  
          if (bc != null) {
              ag.setCitation(bcc.convert(bc));
              hasAnnotation = true;
          }
  
          if (be != null) {
              ag.setEvidence(bec.convert(be));
              hasAnnotation = true;
          }
  
          if (hasAnnotation) {
              s.setAnnotationGroup(ag);
          }
  
          return s;
      }
docs: {@inheritDoc}