AzureStorage.Blobs(account as text, optional options as nullable record) as table
Returns a navigational table containing a row for each container found at the account URL,
account, from an Azure storage vault. Each row contains a link to the container blobs.
options may be specified to control the following options:
BlockSize: The number of bytes to read before waiting on the data consumer. The default value is 4 MB.
RequestSize: The number of bytes to try to read in a single HTTP request to the server. The default value is 4 MB.
ConcurrentRequests: The ConcurrentRequests option supports faster download of data by specifying the number of requests to be made in parallel, at the cost of memory utilization. The memory required is (ConcurrentRequest * RequestSize). The default value is 16.