In 2.24, EADG string tuning for bass guitar tablature?

[Kevin Cole]

I don't play bass guitar and my music theory-fu leaves a lot to be
desired, but I am attempting to transcribe from an existing score that
shows a tablature staff explicitly saying that it uses EAGD tuning.
After poking around a bit, I found that the mandolin uses the same
tuning (? I don't play any stringed instruments. So maybe that's not
right.)

When I attempt to change:

    \new TabStaff \with { stringTunings = #bass-tuning } \riff

to:

    \new TabStaff \with { stringTunings = #mandolin-tuning } \riff

the TabStaff goes blank.

The 2.25 documentation page suggests it should work, there is no
corresponding 2.24 documentation page, yet there is no indication that
there was a change in this area between 2.24 and 2.25 in the changes
documentation.

https://lilypond.org/doc/v2.25/Documentation/notation/custom-tablatures
https://lilypond.org/doc/v2.24/Documentation/notation/custom-tablatures
- 404 not found
https://lilypond.org/doc/v2.25/Documentation/changes-big-page

Here's what I came up with as an MWE:

%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
\version "2.24.2"

riff = \relative {
  \clef "bass_8"    % I assume from examples that's right.
  c,4 d e f
}

\score {
    \new Staff
  <<
    \new Voice    \with { \omit StringNumber }           \riff
    \new TabStaff \with { stringTunings = #mandolin-tuning } \riff
  >>
}
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%