code: @Override
      protected Object processObject(Object o) {
          if (o instanceof PGobject &&
                          ((PGobject)o).getType().equals("jsonb")) {
              return ((PGobject) o).getValue();
          }
          return super.processObject(o);
      }
docs: Overrides default behaviour for JSON values, that are converted to strings.
  
  @param o The object in need of some kind of processing before being set.
  @return  The processed object.
  @since 2.1.5