def start_workflow(flow)
      @http.post(
        instance_worker_url,
        ATTR_PROG => PROG,
        ATTR_CANONICAL => canonical_name(flow),
        ATTR_NAME => class_name(flow),
        ATTR_DATA => @serializer.encode(@properties.from(flow)),
        ATTR_ID => parse_custom_id_from(flow)
      )
    end
def start_workflow(flow)
      @http.post(
        instance_worker_url,
        ATTR_PROG => PROG,
        ATTR_CANONICAL => canonical_name(flow),
        ATTR_NAME => class_name(flow),
        ATTR_DATA => @serializer.encode(@properties.from(flow)),
        ATTR_ID => parse_custom_id_from(flow)
      )
    end
Start the specified workflow
 @param flow [Zenaton::Interfaces::Workflow]