(command.CommandList
  children: [
    (command.Subshell
      child: (C {<printf>} {(SQ <'Bazel does not yet support objc protos.\\n'>)})
      redirects: [(redir op:<Id.Redir_GreatAnd '>&'> loc:(redir_loc.Fd fd:1) arg:{<2>})]
    )
    (command.ControlFlow token:<Id.ControlFlow_Exit exit> arg_word:{<1>})
  ]
)