HandleCreateSuccessfully creates an HTTP handler at `/os-vendor-backup-sharing` on the test handler mux that responds with a `Create` response.

HandleDeleteSuccessfully creates an HTTP handler at `/os-vendor-backup-sharing/87566ed6-72cb-4053-aa6e-6f6216b3d507` on the test handler mux that responds with a `Delete` response.

HandleGetSuccessfully creates an HTTP handler at `/os-vendor-backup-sharing/ac0fb374-a288-4399-ac63-cc080a13a2ee` on the test handler mux that responds with a `Get` response.

CreateOutput represents the response body from a Create request.

CreateExpected represents the expected object from a Create request.