(command.CommandList
  children: [
    (command.ShAssignment
      pairs: [
        (assign_pair
          lhs: (sh_lhs_expr.Name name:test_description)
          op: assign_op.Equal
          rhs: {(SQ (Token id:Id.Lit_Chars val:'read-tree can handle submodules' span_id:6))}
          spids: [4]
        )
      ]
    )
    (C {(.)} {(./test-lib.sh)})
    (C {(.)} {(DQ ($ Id.VSub_DollarName '$TEST_DIRECTORY')) (/lib-submodule-update.sh)})
    (C {(test_submodule_switch)} {(DQ ('git read-tree -u -m'))})
    (C {(test_submodule_forced_switch)} {(DQ ('git read-tree -u --reset'))})
    (C {(test_done)})
  ]
)