code: @Override
      public Map<String, Object> getBodyParameters() {
          HashMap<String, Object> params = new HashMap<String, Object>();
          params.put("itemType", this.itemType);
          params.put("itemId", this.itemId);
          params.put("time", this.time);
          if (this.cascadeCreate!=null) {
              params.put("cascadeCreate", this.cascadeCreate);
          }
          return params;
      }
docs: Get body parameters
  @return Values of body parameters (name of parameter: value of the parameter)