public async Task InitializeAsync()
{
if (_initialized != null)
{
throw new InvalidOperationException("InitializeAsync has already been called");
}
var snapshotTime = await _storageFacade.SnapshotAsync(_blobName);
var blocks = await _storageFacade.GetBlocksAsync(_blobName, snapshotTime);
var logFat = blocks.Count == 0
? new LogFat()
: await LoadFatAsync((int)blocks[0].Length, snapshotTime);
_initialized = new Initialized(snapshotTime, logFat, blocks);
}
