Before you submit your pull request consider the following guidelines:

Search GitHub for an open or closed Pull Request that relates to your submission. You don't want to duplicate effort.
Please sign our Contributor License Agreement (CLA) before sending pull requests. We cannot accept code without this.
Make your changes in a new git branch:
```
git checkout -b my-fix-branch master
```
Follow our Coding Rules.
Include appropriate test cases.
Create your patch.
Run the full Angular Material test suite, as described in the developer documentation, and ensure that all tests pass.
Commit your changes using a descriptive commit message that follows our commit message conventions. Adherence to the commit message conventions is required because release notes are automatically generated from these messages.
```
git commit -a
```
Note: the optional commit -a command line option will automatically "add" and "rm" edited files.
Build your changes locally to ensure all the tests pass:
```
gulp karma
```
Push your branch to GitHub:
```
git push origin my-fix-branch
```
In GitHub, send a pull request to angular:master.
If we suggest changes then:
- Make the required updates.
- Re-run the Angular Material test suite to ensure tests are still passing.
- Rebase your branch and force push to your GitHub repository (this will update your Pull Request):
```
git rebase master -i
git push -f
```

That's it... thank you for your contribution!

After your pull request is merged, you can safely delete your branch and pull the changes from the main (upstream) repository:

Delete the remote branch on GitHub either through the GitHub web UI or your local shell as follows:
```
git push origin --delete my-fix-branch
```
Check out the master branch:
```
git checkout master -f
```
Delete the local branch:
```
git branch -D my-fix-branch
```
Update your master with the latest upstream version:
```
git pull --ff upstream master
```

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