(CommandList
  children: [
    (C {(set)} {(-o)} {(errexit)})
    (C {(set)} {(-o)} {(nounset)})
    (C {(set)} {(-o)} {(pipefail)})
    (Assignment
      keyword: Assign_None
      pairs: [
        (assign_pair
          lhs: (LhsName name:KUBE_ROOT)
          op: Equal
          rhs: 
            {
              (DQ 
                (CommandSubPart
                  command_list: 
                    (CommandList
                      children: [(C {(dirname)} {(DQ (${ VSub_Name BASH_SOURCE))})]
                    )
                  left_token: <Left_CommandSub '$('>
                  spids: [83 91]
                ) (/..)
              )
            }
          spids: [81]
        )
      ]
      spids: [81]
    )
    (C {(source)} {(DQ (${ VSub_Name KUBE_ROOT) (/build/common.sh))})
    (C 
      {(kube) (Lit_Other ':') (Lit_Other ':') (build) (Lit_Other ':') (Lit_Other ':') (verify_prereqs)}
    )
    (C {(kube) (Lit_Other ':') (Lit_Other ':') (build) (Lit_Other ':') (Lit_Other ':') (build_image)})
  ]
)