docs: public static PlanBean unmarshallPlan(Map<String, Object> source) {
          if (source == null) {
              return null;
          }
          PlanBean bean = new PlanBean();
          bean.setId(asString(source.get("id")));
          bean.setName(asString(source.get("name")));
          bean.setDescription(asString(source.get("description")));
          bean.setCreatedBy(asString(source.get("createdBy")));
          bean.setCreatedOn(asDate(source.get("createdOn")));
          postMarshall(bean);
          return bean;
      }