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## Contributor License Agreement

This repository (``optuna-dashboard``) and [Goptuna](https://github.com/c-bata/goptuna) share common code.
This pull request may therefore be ported to Goptuna.
Make sure that you understand the consequences concerning licenses and check the box below if you accept the term before creating this pull request.

* [ ] I agree this patch may be ported to [Goptuna](https://github.com/c-bata/goptuna) by other Goptuna contributors.

## Reference Issues/PRs
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## What does this implement/fix? Explain your changes.

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