[slurm-users] Access to --constraint=<arg> in Lua cli_filter?

If I supply a

--constraint=<arg>

option to an sbatch/salloc/srun, does the arg appear inside any object that a Lua CLI Filter could access?

I've tried this basic check

if is_unset(options['constraint']) then slurm_errorf('constraint is unset ') end

and seen that that object is, indeed, unset.

Kevin