* Support Retrieve model API (#340)
* Test for GetModel error cases. (#340)
* Reduce the cognitive complexity of TestClientReturnsRequestBuilderErrors (#340)
* feat(models): include flow for azure openai endpoint
* feat(models): include flow for azure openai endpoint
* feat(models): include flow for azure openai endpoint
* chore(fullURL): update logic to run in fullURL function
* chore(fullURL): update based on pr comments to use c.config.APIVersion