public async Task <LeaseBlobChangeResponse> LeaseBlobChangeAsync(string containerName, string blobName, string currentLeaseId, string proposedLeaseId)
        {
            var request  = new LeaseBlobChangeRequest(_account, containerName, blobName, currentLeaseId, proposedLeaseId);
            var response = await request.ExecuteAsync();

            return(response.Payload);
        }
        public LeaseBlobChangeResponse LeaseBlobChange(string containerName, string blobName, string currentLeaseId, string proposedLeaseId)
        {
            var request  = new LeaseBlobChangeRequest(_account, containerName, blobName, currentLeaseId, proposedLeaseId);
            var response = request.Execute();

            return(response.Payload);
        }