code: function getOrSetSuppressed(s) {
      var suppressed;
      if (s) {
        setSuppressed(getIds(s));
        suppressed = getSuppressed();
        storageWrite('sugarUpgradeSuppressed', suppressed, 'array');
      } else {
        suppressed = getSuppressed();
      }
      return suppressed;
    }
docs: --- Suppressing ---