**What kind of change does this PR introduce? (Bug fix, feature, docs update, ...)**



**What is the current behavior? (You can also link to an open issue here)**



**What is the new behavior (if this is a feature change)?**



**Please check if the PR fulfills these requirements**
- [ ] The commit messages follow our guidelines: https://github.com/angular/angular.js/blob/master/CONTRIBUTING.md#commit-message-format
- [ ] A unit test has been written for this change.
- [ ] Running `npm run build` produced a successful build. (Unit testing can be done by running `npm test`;)
- [ ] My code has been linted. (`npm run lint` to do this. `npm run build` will fail if there are files not linted.)


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**Other information**:
