0
1
2
3
4
5
6
{0 => "FORK", 1 => "PBS", 2 => "SLURM", 3 => "LSF", 4 => "UGE", 5 => "CLOUD", 6 => "AIRAVATA_CUSTOM"}
Set.new([FORK, PBS, SLURM, LSF, UGE, CLOUD, AIRAVATA_CUSTOM]).freeze