This tuner is a customized tuner which only suitable for trial whose code path is "~/nni/examples/trials/ga_squad",
type cd ~/nni/examples/trials/ga_squad
and check readme.md to get more information for ga_squad trial.
If you want to use ga_customer_tuner in your experiment, you could set config file as following format:
tuner:
codeDir: ~/nni/examples/tuners/ga_customer_tuner
classFileName: customer_tuner.py
className: CustomerTuner
classArgs:
optimize_mode: maximize