(List
  (= scope=<EAssignScope.GLOBAL 1> flags=0 words=[] bindings=[('KUBE_ROOT', {[ComSub (Com {[LIT_CHARS dirname]} {[DQ [VarSub BASH_SOURCE]]})] [LIT_CHARS /../..]})])
  (Com {[LIT_CHARS source]} {[DQ [VarSub KUBE_ROOT][LIT_CHARS /cluster/centos/config-default.sh]]}  )
)