APIVersion : the version of the Grafeas API per the Google Cloud scheme - https://github.com/grafeas/grafeas/blob/master/docs/versioning.md#api.

GrafeasRepository : the repository of the Grafeas server to use for downloading Swagger files.

Reference : the commit, branch, or tag to use for downloading Swagger files from the defined Grafeas repo.

SwaggerCodegenVersion : the version of the Swagger CodeGen CLI to download.