message: style: add file header
  PR Close
diff: +/**
  + * @license
  + * Copyright Google Inc. All Rights Reserved.
  + *
  + * Use of this source code is governed by an MIT-style license that can be
  + * found in the LICENSE file at https://angular.io/license
  + */
  +/**
  + * @fileoverview This files is only here so that @npm//@angular/bazel/bin:ngc-wrapped
  + * is a valid target as it is part of `esm5_outputs_aspect` in /packages/bazel/src/esm5.bzl
  + * TODO(gregmagolan): fix esm5_outputs_aspect so that this is not required
  + */
  +
  throw new Error('should never be run');
  