* Return not found when request for content references when entity does not exist.
* Apply suggestions from code review
Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>
* Move check for entity existence from controller to the service.
* Update OpenApi.json.
* Apply suggestions from code review
Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>
* Addressed points raised in code review.
* Update OpenApi.json
* Resolved breaking changes.
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Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>