// HEAD operations against a storage Container are used to determine the number of Objects, and the total bytes of all Objects stored in the Container.
// The Object count and utilization are returned in the X-Container-Object-Count and X-Container-Bytes-Used headers respectively.
// HEAD /<api version>/<account>/<container>/<object>
// No response body is returned. Metadata is returned as HTTP headers. A status code of 204 (No Content) indicates success, status 404 (Not Found) is returned when the Object does not exist.
// CDN URL
// HEAD /<api version>/<account>/<container>
// HEAD operations against a CDN-enabled Container are used to determine the CDN attributes of the Container.
// PUT operations against a Container are used to CDN-enable that Container.
// POST operations against a CDN-enabled Container are used to adjust CDN attributes.