code: function (at, obj, values) {
                  shared.utils.dassert(this._mtx.cset.at(at).sort !== undefined);
                  // Null out history
                  var t = shared.tracker.getTracker(obj);
                  var dead = t.lastChange();
                  while(dead !== -1) {
                      var c = dead;
                      dead = this._mtx.cset.at(dead).lasttx;
                      this._mtx.cset.setAt(c, null);
                  }
                  // Insert re-init
                  this._mtx.cset.push({
                      obj: obj,
                      reinit: values,
                      lasttx: -1
                  });
                  t.setLastChange(this._mtx.cset.size() - 1);
              }
docs: /*
  Utility to change a sort record with a reinit during post-processing