(CommandList
  children: [
    (Assignment
      keyword: Assign_None
      pairs: [
        (assign_pair
          lhs: (LhsName name:KUBE_ROOT)
          op: Equal
          rhs: 
            {
              (CommandSubPart
                command_list: 
                  (CommandList
                    children: [(C {(dirname)} {(DQ (${ VSub_Name BASH_SOURCE))})]
                  )
                left_token: <Left_CommandSub '$('>
                spids: [45 53]
              ) (/../..)
            }
          spids: [44]
        )
      ]
      spids: [44]
    )
    (C {(source)} {(${ VSub_Name KUBE_ROOT) (/test/kubemark/cloud-provider-config.sh)})
    (C {(source)} {(${ VSub_Name KUBE_ROOT) (/cluster/) (${ VSub_Name CLOUD_PROVIDER) (/util.sh)})
    (C {(source)} 
      {(${ VSub_Name KUBE_ROOT) (/cluster/kubemark/) (${ VSub_Name CLOUD_PROVIDER) 
        (/config-default.sh)
      }
    )
  ]
)