(command.CommandList children: [ (C {(Id.KW_Set set)} {(-o)} {(errexit)}) (C {(Id.KW_Set set)} {(-o)} {(nounset)}) (C {(Id.KW_Set set)} {(-o)} {(pipefail)}) (command.ShAssignment pairs: [ (assign_pair lhs: (sh_lhs_expr.Name name:KUBE_ROOT) op: assign_op.Equal rhs: { (command_sub left_token: (Token id:Id.Left_DollarParen val:'$(' span_id:68) command_list: (command.CommandList children: [(C {(dirname)} {(DQ (${ Id.VSub_Name BASH_SOURCE))})] ) ) (/..) } spids: [67] ) ] ) (command.If arms: [ (if_arm cond: [ (command.Sentence child: (C {(Id.Lit_LBracket '[')} {(-f)} {(DQ (${ Id.VSub_Name KUBE_ROOT) (/cluster/env.sh))} {(Id.Lit_RBracket ']')} ) terminator: (Token id:Id.Op_Semi val:';' span_id:94) ) ] action: [(C {(source)} {(DQ (${ Id.VSub_Name KUBE_ROOT) (/cluster/env.sh))})] spids: [80 96] ) ] ) (C {(source)} {(DQ (${ Id.VSub_Name KUBE_ROOT) (/cluster/kube-util.sh))}) (C {(echo)} {(DQ ('Bringing down cluster using provider: ') ($ Id.VSub_DollarName '$KUBERNETES_PROVIDER'))} ) (C {(verify-prereqs)}) (C {(verify-kube-binaries)}) (C {(kube-down)}) (C {(echo)} {(DQ (Done))}) ] )