problem: `tramp-list-tramp-buffers` missing emacs 24.1.50.1 ?

[Paul K]

Hallo People.

I was invoking this function in one one of my emacs 23 defuns.

Now I get the following:

Debugger entered--Lisp error: (void-function tramp-list-tramp-buffers)
  (tramp-list-tramp-buffers)
  eval((tramp-list-tramp-buffers) nil)
  eval-last-sexp-1(nil)
  eval-last-sexp(nil)
  call-interactively(eval-last-sexp nil nil)

The funny thing is that this method still exists in
/usr/local/share/emacs/24.1.50/lisp/net/tramp-cmds.el.gz.

is it a bug?

best regards,
Pauls