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## Description

> Please provide a detailed description for the change.
> As much as possible, please try to keep changes separate by purpose. For example, try not to make a one-line bug fix in a feature request, or add an irrelevant README change to a bug fix.

## Impact

> What's the impact of this change?

## Testing

> Have you added unit and integration tests if necessary?
> Were any tests changed? Are any breaking changes necessary?

## Additional Information

> Any additional details that we should be aware of?

## Checklist

- [ ] Make sure to open an issue as a [bug/issue](https://github.com/googleapis/nodejs-spanner/issues/new/choose) before writing your code! That way we can discuss the change, evaluate designs, and agree on the general idea
- [ ] Ensure the tests and linter pass
- [ ] Code coverage does not decrease
- [ ] Appropriate docs were updated
- [ ] Appropriate comments were added, particularly in complex areas or places that require background
- [ ] No new warnings or issues will be generated from this change

Fixes #issue_number_goes_here 🦕
