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