hunk.code_window:   const cjh = experimental.jobs.createJobHandler;
     const handler = cjh<json.JsonObject, BuilderInput, OutT>((options, context) => {
       const scheduler = context.scheduler;
       const progressChannel = context.createChannel('progress');
       const logChannel = context.createChannel('log');
       let currentState: BuilderProgressState = BuilderProgressState.Stopped;
       const teardownLogics: Array<() => (PromiseLike<void> | void)> = [];
       let tearingDown = false;
  
hunk.labels: keep keep keep keep add keep keep keep
hunk.after_edit:     const analyticsChannel = context.createChannel('analytics');
  
hunk.file_path: packages/angular_devkit/architect/src/create-builder.ts
hunk.type: add
file: /**
   * @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
   */
  
  export * from './alias';
  export * from './buffer';
  export * from './empty';
  export * from './interface';
  export * from './memory';
  export * from './pattern';
  export * from './record';
  export * from './safe';
  export * from './scoped';
  export * from './sync';
  export * from './resolver';
  export * from './test';
  