How to list storage blobs is undiscoverable

[roy-work]

az feedback auto-generates most of the information requested below, as of CLI version 2.0.62

Related command

az storage blob --help

Describe the bug
The subgroup az storage blob directory is missing from --help:

» az storage blob --help

Group
    az storage blob : Manage object storage for unstructured data (blobs).
        Please specify one of the following authentication parameters for your commands: --auth-
        mode, --account-key, --connection-string, --sas-token. You also can use corresponding
        environment variables to store your authentication credentials, e.g. AZURE_STORAGE_KEY,
        AZURE_STORAGE_CONNECTION_STRING and AZURE_STORAGE_SAS_TOKEN.

Subgroups:
    copy                : Manage blob copy operations. Use `az storage blob show` to check the
                          status of the blobs.
    immutability-policy : Manage blob immutability policy.
    incremental-copy    : Manage blob incremental copy operations.
    lease               : Manage storage blob leases.
    metadata            : Manage blob metadata.
    service-properties  : Manage storage blob service properties.

Commands:
    delete              : Mark a blob or snapshot for deletion.
    delete-batch        : Delete blobs from a blob container recursively.
    download            : Download a blob to a file path.
    download-batch      : Download blobs from a blob container recursively.
    exists              : Check for the existence of a blob in a container.
    generate-sas        : Generate a shared access signature for the blob.
    query     [Preview] : Enable users to select/project on blob or blob snapshot data by
                          providing simple query expressions.
    restore             : Restore blobs in the specified blob ranges.
    rewrite   [Preview] : Create a new Block Blob where the content of the blob is read
                          from a given URL.
    set-legal-hold      : Set blob legal hold.
    set-tier            : Set the block or page tiers on the blob.
    show                : Get the details of a blob.
    snapshot            : Creates a snapshot of the blob.
    sync      [Preview] : Sync blobs recursively to a storage blob container.
    undelete            : Restore soft deleted blob or snapshot.
    update              : Sets system properties on the blob.
    upload              : Upload a file to a storage blob.
    upload-batch        : Upload files from a local directory to a blob container.
    url                 : Create the url to access a blob.

To search AI knowledge base for examples, use: az find "az storage blob"

It does work, too:

» az storage directory list --help

Command
    az storage directory list : List directories in a share.

Arguments
[… snip]

To Reproduce
Run the command.

Expected behavior
Subgroups are fully documented.

Environment summary
macOS

Additional context

[roy-work]

Oh, or is it this roundaboutness:

This command is implicitly deprecated because command group 'storage blob directory' is deprecated and will be removed in a future release. Use 'az storage fs directory' instead.

… why would I ever look for a storage blob command outside of az storage blob…

(Why this isn't just as simple as az storage blob list is beyond me.)

(And additionally, it doesn't even appear to work:

» az storage blob directory list -c "$CONTAINER_NAME" -d / --account-name $ACCOUNT_NAME
[]

I know there is stuff in there, I can see it in the Portal. There's just far too much to deal with from the UI, so I need the CLI to work. -d is required, and essentially also undocumented, so I have no idea if that is the right format.)

[roy-work]

Additionally, this is ridiculous:

» az storage blob directory list -c [snip] -d '' --account-name [snip]
This command is implicitly deprecated because command group 'storage blob directory' is deprecated and will be removed in a future release. Use 'az storage fs directory' instead.
» az storage fs directory list --account-name [snip] -f [snip]
Command group 'storage fs' is in preview and under development. Reference and support levels: https://aka.ms/CLI_refstatus

The old way is deprecated, the new way is not yet ready.

It'd be nice to run the simplest of operations on Azure without stumbling into umpteen different bugs.

[yonzhan]

@evelyn-ys for awareness