What does "warning: no tags were found for ..." mean when running `guix lint`?

[Yuval Langer]

Hi,

in my channel root directory I run `guix lint -L .
emacs-super-duper-yes-or-no` and get:

```
…
./kakafarm/packages/emacs-xyz.scm:160:7: warning: no tags were found
for emacs-super-duper-yes-or-no
…
```

What does it mean?  How do I fix it?

Many thanks,
Yuval Langer.