public AzureFileSystem(LocalCache cache, Uri root, Uri baseUri, CloudStorageAccount azureAccount, string container)
{
_baseUri = UriUtility.AddTrailingSlash(baseUri);
_root = UriUtility.AddTrailingSlash(root);
_cache = cache;
_files = new ConcurrentDictionary <Uri, ISleetFile>();
_azureAccount = azureAccount;
_client = _azureAccount.CreateCloudBlobClient();
_container = _client.GetContainerReference(container);
}