Problem Statement/Rationale

The session options page lists a number of methods that appear to be missing.

Steps to Reproduce

test> var session = db.getMongo().startSession()

test> session.getOptions()
{}
test> session.getOptions().getReadPreference()
TypeError: session.getOptions().getReadPreference is not a function
test> session.getOptions().getReadConcern()
TypeError: session.getOptions().getReadConcern is not a function
test> session.getOptions().getWriteConcern()
TypeError: session.getOptions().getWriteConcern is not a function
test> session.getOptions().shouldRetryWrites()
TypeError: session.getOptions().shouldRetryWrites is not a function

Expected Results

The methods work as they did in the legacy mongo shell

Actual Results

The methods are unsupported

Additional Notes

Per Anna in Slack, setWriteConcern() probably cannot be implemented.