external atom TaskObject id "recurring:task";
package TaskRuntime id "recurring:runtime" revision "recurring:runtime@1" {
  operation complete id "recurring:runtime:complete" : uint64 -> unit
  mode call execution transaction targets [browser, server] receiver atom TaskObject requires {
    state occurrence id "recurring:port:occurrence" : uint64 [read, write];
    state due id "recurring:port:due" : int64 [read, write];
  };
}