Where does one find the manpage of a flatpak application?
For example, I know that Thunderbird usually has a manpage. However, I have tried the following two commands to no avail.
[user ~]$ man thunderbird
No manual entry for thunderbird
[user ~]$ flatpak run --command="bash" org.mozilla.Thunderbird
[ org.mozilla.Thunderbird ~]$ man thunderbird
bash: man: command not found
Note: There is a similar question on askUbuntu, however, it is related to a specific software, and the answer pertains to that software only.