Avoid error when $options is NULL in buildUrl()

Restoring issue summary, tags and related issue which was removed in #68.

Re-roll patch needed for 11.x.

Re-roll patch created for 11.x.

I added the Needs issue summary update tag because it would help to understand remaining work and the proposed resolution specifically the test coverage expansion in the issue summary rather in the comment chain.

I am working with @ompiepy at MidCamp 2024 and we're going to look at this issue to try to move it forward. Possibly transitioning to a merge request after updating the issue summary.

I am looking into the issues to get the summary update and then start working for the merge request.