message: Internal Rotation Script
diff: -send_cls_to('tf-api-owners+reviews');
  +send_cls_to('tf-api-owners+reviews', move_to_cc=False);
  +send_cls_to('tf-api-owners', move_to_cc=False);
  +// The full TF API Owners review process is described at go/tf-api-review-process
  define Main {
  + // The TF API Owners only review CLs with at least one LGTM
  + if (!has_lgtm()) {
  + add_comment('Please get at least one LGTM first before asking for a review from the TF API Owners (go/tf-api-review-process). When ready, add tf-api-owners+reviews as a reviewer.');
  + return;
  + }
  +
  add_comment("The API owners use a rotation based system (go/tf-api-review-process). Assigning several owners to follow along and review.\nFor the owners, if you are the second owner LGTM, please approve the CL.");
  with ("tensorflow\.tpu") {
  @@ -23,4 +31,6 @@ define Main {
  reassign_to_list(choose_n(2, google_group('tf-api-owners-rotation')), minimize_reviewer_count=True);
  set_tag('WANT_LGTM', 'all');
  +
  + add_cc(google_group('tf-api-owners+reviews'));
  }
  