How to add description for key remaps?

[DuckDuckWhale]

I have the following in config.toml:

[keys.normal]
space.z = ":reflow"

And this is what I get I press space in normal mode:

┌Space─────────────────────────────────────────────┐
│ f  Open file picker                              │
│ F  Open file picker at current working directory │
│ b  Open buffer picker                            │
│ s  Open symbol picker                            │
│ S  Open workspace symbol picker                  │
│ a  Perform code action                           │
│ '  Open last picker                              │
│ d  Debug (experimental)                          │
│ w  Window                                        │
│ y  Join and yank selections to clipboard         │
│ Y  Yank main selection to clipboard              │
│ p  Paste clipboard after selections              │
│ P  Paste clipboard before selections             │
│ R  Replace selections by clipboard content       │
│ /  Global Search in workspace folder             │
│ k  Show docs for item under cursor               │
│ r  Rename symbol                                 │
│ ?  Open command palette                          │
│ z  :reflow []                                    │
└──────────────────────────────────────────────────┘

How do I specify a description to put on this list so it shows up as z Hard wrap selected lines? Does such a feature exist? And what does the [] part mean?

[CBenoit]

As it’s not documented, I just took a quick glance at the code. It appears you can’t, the feature does not exist yet.

And what does the [] part mean?

It’s representing an array of the arguments to be passed to the function reflow. In this case it’s empty.

[mil-ad]

this feature hasn't been added yet has it?

[Dotrar]

Should we create an issue? I'd love to do this, I try to put my keybinds under my own prefix, which just shows up as blank in the picker