[SR-Users] how to check if t_newtran() has already been called?

[Juha Heinanen]

can t_check_trans() be also used to check if t_newtran() has been
called on the request earlier in the script?

if so, is it so heavyweight thing that it would be better to set a flag
when t_newtran() is called and then test the flag?

-- juha