Background: We received the following feedback from Dennis Kuczynski on the Cloud Automation team:

Consider options.{type}Builder.Build() or Merge() for easy access to underlying options

• At least in mms-automation there are multiple ways the options are used for validation, testing, logging, and setting defaults.
• https://github.com/10gen/mms-automation/blob/master/go_planner/src/com.tengen/cm/dbcheck/dbcheckcommon/mongo_test.go#L53

Slack discussion:

•  https://mongodb.slack.com/archives/C7WJZNUTA/p1731354436642839?thread_ts=1731351937.488989&cid=C7WJZNUTA 

Go Driver team discussion:

• PV: Just need to export this function: https://github.com/mongodb/mongo-go-driver/blob/master/mongo/options/lister.go#L15
• PV: Best solution might be reverting options pattern specifically for ClientOptions, deferring to the original v1 pattern.
• This particular issue has been coming up a lot. We originally decided to change this since maintenance was expensive.
• Try to build a test that uses reflection to tell us we made a bug when merging structs.

Bottom line: We need to figure out what to do with this pattern and testing out whether we can use a test to prevent bugs (scope is ClientOptions not other options).