code: protected QueryParams createQueryParamsForClientRequest() {
  		String datacenter = getDatacenter();
  		if (datacenter != null) {
  			return new QueryParams(datacenter);
  		}
  		return QueryParams.DEFAULT;
  	}
docs: This method will create the {@link QueryParams} to use when retrieving the services
  from Consul. By default {@link QueryParams#DEFAULT} is used. In case a datacenter
  is specified for the current serviceId {@link QueryParams#datacenter} is set.
  @return an instance of {@link QueryParams}